{"assessment":{"best_window":{"end":"2039-04-20T01:55Z","end_local":"04:55","hours":2.42,"label":"good","mean_quality":0.84,"start":"2039-04-19T23:30Z","start_local":"02:30"},"cost":{"altitude":5.2,"clouds":0.0,"darkness":1.28,"moon":0.0},"formula":"astronomy = 100 * min(1, sky_hours / reference_hours) * peak_sky; overall = astronomy * score_weather / 100 (null when the weather is unknown)","hard_limit":null,"headline":"Astronomically possible, with compromises \u2014 weather unknown","hourly":[{"alt":-22,"cloud":null,"high":null,"iso":"2039-04-19T18:00Z","label":"unusable","low":null,"mid":null,"moon_alt":-50,"precip":null,"q":0.0,"rh":null,"sky":"nautical twilight","temp":null,"time":"21:00","wind":null},{"alt":-17,"cloud":null,"high":null,"iso":"2039-04-19T19:00Z","label":"unusable","low":null,"mid":null,"moon_alt":-56,"precip":null,"q":0.0,"rh":null,"sky":"night","temp":null,"time":"22:00","wind":null},{"alt":-10,"cloud":null,"high":null,"iso":"2039-04-19T20:00Z","label":"unusable","low":null,"mid":null,"moon_alt":-58,"precip":null,"q":0.0,"rh":null,"sky":"night","temp":null,"time":"23:00","wind":null},{"alt":-1,"cloud":null,"high":null,"iso":"2039-04-19T21:00Z","label":"unusable","low":null,"mid":null,"moon_alt":-55,"precip":null,"q":0.0,"rh":null,"sky":"night","temp":null,"time":"00:00","wind":null},{"alt":9,"cloud":null,"high":null,"iso":"2039-04-19T22:00Z","label":"unusable","low":null,"mid":null,"moon_alt":-48,"precip":null,"q":0.0,"rh":null,"sky":"night","temp":null,"time":"01:00","wind":null},{"alt":20,"cloud":null,"high":null,"iso":"2039-04-19T23:00Z","label":"marginal","low":null,"mid":null,"moon_alt":-40,"precip":null,"q":0.4,"rh":null,"sky":"night","temp":null,"time":"02:00","wind":null},{"alt":31,"cloud":null,"high":null,"iso":"2039-04-20T00:00Z","label":"good","low":null,"mid":null,"moon_alt":-29,"precip":null,"q":0.81,"rh":null,"sky":"night","temp":null,"time":"03:00","wind":null},{"alt":42,"cloud":null,"high":null,"iso":"2039-04-20T01:00Z","label":"good","low":null,"mid":null,"moon_alt":-19,"precip":null,"q":0.88,"rh":null,"sky":"night","temp":null,"time":"04:00","wind":null},{"alt":53,"cloud":null,"high":null,"iso":"2039-04-20T02:00Z","label":"marginal","low":null,"mid":null,"moon_alt":-8,"precip":null,"q":0.48,"rh":null,"sky":"astronomical twilight","temp":null,"time":"05:00","wind":null},{"alt":63,"cloud":null,"high":null,"iso":"2039-04-20T03:00Z","label":"poor","low":null,"mid":null,"moon_alt":3,"precip":null,"q":0.14,"rh":null,"sky":"nautical twilight","temp":null,"time":"06:00","wind":null}],"peak_quality":0.94,"peak_sky":0.94,"quality_hours":2.65,"reasons":["the target being low or below 20\u00b0 cost 5.2 quality-hours","daylight and twilight cost 1.3 quality-hours"],"reference_hours":4.0,"score":null,"score_astronomy":62,"score_weather":null,"sky_hours":2.65,"verdict":"unknown","verdict_astronomy":"marginal","weather_known":false,"windows":[{"end":"2039-04-19T23:00Z","end_local":"02:00","hours":5.92,"label":"unusable","mean_quality":0.0,"start":"2039-04-19T17:05Z","start_local":"20:05"},{"end":"2039-04-19T23:30Z","end_local":"02:30","hours":0.5,"label":"marginal","mean_quality":0.49,"start":"2039-04-19T23:00Z","start_local":"02:00"},{"end":"2039-04-20T01:55Z","end_local":"04:55","hours":2.42,"label":"good","mean_quality":0.84,"start":"2039-04-19T23:30Z","start_local":"02:30"},{"end":"2039-04-20T02:30Z","end_local":"05:30","hours":0.58,"label":"marginal","mean_quality":0.48,"start":"2039-04-20T01:55Z","start_local":"04:55"},{"end":"2039-04-20T03:05Z","end_local":"06:05","hours":0.58,"label":"poor","mean_quality":0.15,"start":"2039-04-20T02:30Z","start_local":"05:30"},{"end":"2039-04-20T03:35Z","end_local":"06:35","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2039-04-20T03:05Z","start_local":"06:05"}]},"calculation_version":"2026-10-10.1","forecast":[],"forecast_source":"none","forecast_updated_at":null,"limits":{"good_alt":30.0,"usable_alt":20.0},"night":{"dark_from":"2039-04-19T18:47:42Z","dark_hours":7.07,"dark_to":"2039-04-20T01:51:58Z","moon":{"illumination":0.115,"phase":"waning crescent","waxing":false},"moon_free_dark_hours":7.05,"moonrise":"2039-04-20T02:43:00Z","moonset":"2039-04-19T13:01:52Z","sunrise":"2039-04-20T03:33:51Z","sunset":"2039-04-19T17:05:46Z","twilight":{"astronomical":{"end":"2039-04-19T18:47:42Z","start":"2039-04-20T01:51:58Z"},"civil":{"end":"2039-04-19T17:34:58Z","start":"2039-04-20T03:04:39Z"},"nautical":{"end":"2039-04-19T18:10:13Z","start":"2039-04-20T02:29:25Z"}},"window_end":"2039-04-20T09:00:00Z","window_start":"2039-04-19T09:00:00Z"},"night_date":"2039-04-19","site":{"elev_m":1750,"lat":41.693,"lon":24.739,"name":"NAO Rozhen"},"target":{"circumpolar":false,"dark_best":{"airmass":1.28,"alt":51.5,"t":"2039-04-20T01:50:00Z"},"dec":22.71085365,"dec_of_date":22.8215,"dec_str":"+22\u00b0 42' 39.1\"","good_hours":2.0,"limit_rise":"2039-04-19T22:59:53Z","limit_set":"2039-04-19T10:05:54Z","max_az_rate_deg_per_min":0.71,"moon_separation":60.5,"never_rises":false,"ra":300.18213726,"ra_of_date":300.6065,"ra_str":"20h 00m 43.7s","resolved":{"dec":22.71085365,"name":"HD 189733","ra":300.18213726,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=HD%20189733","source":"sesame","spectral_type":"K2V","type":"BY*","type_text":"BY Draconis variable \u2014 a spotted, rotating star","vmag":7.648},"summary":"Only 2.0 h above 30\u00b0, 2.9 h above 20\u00b0 \u2014 usable, at high airmass.","terrain":{"available":true,"behind_at":"2039-04-19T11:59:41Z","blocked_dark_hours":0,"clears_at":"2039-04-19T21:11:20Z","rise_az":273.0},"track":[{"above_terrain":true,"airmass":1.87,"alt":32.19,"az":273.0,"t":"2039-04-19T09:00:00Z","terrain":0.13},{"above_terrain":true,"airmass":1.92,"alt":31.26,"az":273.8,"t":"2039-04-19T09:05:00Z","terrain":-0.0},{"above_terrain":true,"airmass":1.97,"alt":30.33,"az":274.6,"t":"2039-04-19T09:10:00Z","terrain":0.05},{"above_terrain":true,"airmass":2.03,"alt":29.39,"az":275.4,"t":"2039-04-19T09:15:00Z","terrain":0.05},{"above_terrain":true,"airmass":2.09,"alt":28.46,"az":276.2,"t":"2039-04-19T09:20:00Z","terrain":-0.04},{"above_terrain":true,"airmass":2.16,"alt":27.53,"az":277.0,"t":"2039-04-19T09:25:00Z","terrain":-0.14},{"above_terrain":true,"airmass":2.22,"alt":26.61,"az":277.7,"t":"2039-04-19T09:30:00Z","terrain":-0.1},{"above_terrain":true,"airmass":2.3,"alt":25.68,"az":278.5,"t":"2039-04-19T09:35:00Z","terrain":-0.05},{"above_terrain":true,"airmass":2.38,"alt":24.75,"az":279.3,"t":"2039-04-19T09:40:00Z","terrain":-0.05},{"above_terrain":true,"airmass":2.46,"alt":23.83,"az":280.0,"t":"2039-04-19T09:45:00Z","terrain":-0.12},{"above_terrain":true,"airmass":2.56,"alt":22.91,"az":280.8,"t":"2039-04-19T09:50:00Z","terrain":-0.0},{"above_terrain":true,"airmass":2.66,"alt":21.99,"az":281.6,"t":"2039-04-19T09:55:00Z","terrain":-0.06},{"above_terrain":true,"airmass":2.76,"alt":21.08,"az":282.3,"t":"2039-04-19T10:00:00Z","terrain":-0.09},{"above_terrain":true,"airmass":2.88,"alt":20.16,"az":283.1,"t":"2039-04-19T10:05:00Z","terrain":-0.0},{"above_terrain":true,"airmass":3.01,"alt":19.25,"az":283.8,"t":"2039-04-19T10:10:00Z","terrain":0.1},{"above_terrain":true,"airmass":3.15,"alt":18.35,"az":284.6,"t":"2039-04-19T10:15:00Z","terrain":0.18},{"above_terrain":true,"airmass":3.3,"alt":17.44,"az":285.3,"t":"2039-04-19T10:20:00Z","terrain":0.23},{"above_terrain":true,"airmass":3.47,"alt":16.54,"az":286.1,"t":"2039-04-19T10:25:00Z","terrain":0.23},{"above_terrain":true,"airmass":3.66,"alt":15.64,"az":286.9,"t":"2039-04-19T10:30:00Z","terrain":0.35},{"above_terrain":true,"airmass":3.87,"alt":14.75,"az":287.6,"t":"2039-04-19T10:35:00Z","terrain":0.25},{"above_terrain":true,"airmass":4.11,"alt":13.86,"az":288.4,"t":"2039-04-19T10:40:00Z","terrain":0.17},{"above_terrain":true,"airmass":4.38,"alt":12.97,"az":289.1,"t":"2039-04-19T10:45:00Z","terrain":0.19},{"above_terrain":true,"airmass":4.68,"alt":12.09,"az":289.9,"t":"2039-04-19T10:50:00Z","terrain":0.28},{"above_terrain":true,"airmass":5.02,"alt":11.21,"az":290.7,"t":"2039-04-19T10:55:00Z","terrain":0.42},{"above_terrain":true,"airmass":5.41,"alt":10.34,"az":291.4,"t":"2039-04-19T11:00:00Z","terrain":0.52},{"above_terrain":true,"airmass":5.87,"alt":9.47,"az":292.2,"t":"2039-04-19T11:05:00Z","terrain":0.49},{"above_terrain":true,"airmass":6.42,"alt":8.61,"az":293.0,"t":"2039-04-19T11:10:00Z","terrain":0.28},{"above_terrain":true,"airmass":7.06,"alt":7.75,"az":293.8,"t":"2039-04-19T11:15:00Z","terrain":0.26},{"above_terrain":true,"airmass":7.83,"alt":6.89,"az":294.6,"t":"2039-04-19T11:20:00Z","terrain":0.24},{"above_terrain":true,"airmass":8.78,"alt":6.05,"az":295.3,"t":"2039-04-19T11:25:00Z","terrain":0.26},{"above_terrain":true,"airmass":9.97,"alt":5.2,"az":296.1,"t":"2039-04-19T11:30:00Z","terrain":0.32},{"above_terrain":true,"airmass":11.5,"alt":4.36,"az":296.9,"t":"2039-04-19T11:35:00Z","terrain":0.26},{"above_terrain":true,"airmass":13.5,"alt":3.53,"az":297.7,"t":"2039-04-19T11:40:00Z","terrain":0.16},{"above_terrain":true,"airmass":16.21,"alt":2.71,"az":298.5,"t":"2039-04-19T11:45:00Z","terrain":0.15},{"above_terrain":true,"airmass":20.04,"alt":1.89,"az":299.4,"t":"2039-04-19T11:50:00Z","terrain":0.24},{"above_terrain":true,"airmass":25.65,"alt":1.08,"az":300.2,"t":"2039-04-19T11:55:00Z","terrain":0.36},{"above_terrain":false,"airmass":34.15,"alt":0.27,"az":301.0,"t":"2039-04-19T12:00:00Z","terrain":0.32},{"above_terrain":false,"airmass":null,"alt":-0.53,"az":301.8,"t":"2039-04-19T12:05:00Z","terrain":0.12},{"above_terrain":false,"airmass":null,"alt":-1.32,"az":302.7,"t":"2039-04-19T12:10:00Z","terrain":-0.13},{"above_terrain":false,"airmass":null,"alt":-2.1,"az":303.5,"t":"2039-04-19T12:15:00Z","terrain":-0.16},{"above_terrain":false,"airmass":null,"alt":-2.88,"az":304.4,"t":"2039-04-19T12:20:00Z","terrain":-0.17},{"above_terrain":false,"airmass":null,"alt":-3.65,"az":305.3,"t":"2039-04-19T12:25:00Z","terrain":-0.26},{"above_terrain":false,"airmass":null,"alt":-4.41,"az":306.1,"t":"2039-04-19T12:30:00Z","terrain":-0.12},{"above_terrain":false,"airmass":null,"alt":-5.16,"az":307.0,"t":"2039-04-19T12:35:00Z","terrain":0.18},{"above_terrain":false,"airmass":null,"alt":-5.9,"az":307.9,"t":"2039-04-19T12:40:00Z","terrain":0.31},{"above_terrain":false,"airmass":null,"alt":-6.64,"az":308.8,"t":"2039-04-19T12:45:00Z","terrain":0.2},{"above_terrain":false,"airmass":null,"alt":-7.36,"az":309.7,"t":"2039-04-19T12:50:00Z","terrain":0.21},{"above_terrain":false,"airmass":null,"alt":-8.08,"az":310.6,"t":"2039-04-19T12:55:00Z","terrain":0.31},{"above_terrain":false,"airmass":null,"alt":-8.78,"az":311.5,"t":"2039-04-19T13:00:00Z","terrain":0.24},{"above_terrain":false,"airmass":null,"alt":-9.48,"az":312.5,"t":"2039-04-19T13:05:00Z","terrain":0.2},{"above_terrain":false,"airmass":null,"alt":-10.16,"az":313.4,"t":"2039-04-19T13:10:00Z","terrain":0.35},{"above_terrain":false,"airmass":null,"alt":-10.84,"az":314.4,"t":"2039-04-19T13:15:00Z","terrain":0.5},{"above_terrain":false,"airmass":null,"alt":-11.5,"az":315.3,"t":"2039-04-19T13:20:00Z","terrain":0.53},{"above_terrain":false,"airmass":null,"alt":-12.15,"az":316.3,"t":"2039-04-19T13:25:00Z","terrain":0.42},{"above_terrain":false,"airmass":null,"alt":-12.79,"az":317.3,"t":"2039-04-19T13:30:00Z","terrain":0.31},{"above_terrain":false,"airmass":null,"alt":-13.42,"az":318.3,"t":"2039-04-19T13:35:00Z","terrain":0.19},{"above_terrain":false,"airmass":null,"alt":-14.04,"az":319.3,"t":"2039-04-19T13:40:00Z","terrain":-0.16},{"above_terrain":false,"airmass":null,"alt":-14.64,"az":320.3,"t":"2039-04-19T13:45:00Z","terrain":-0.2},{"above_terrain":false,"airmass":null,"alt":-15.23,"az":321.3,"t":"2039-04-19T13:50:00Z","terrain":-0.06},{"above_terrain":false,"airmass":null,"alt":-15.81,"az":322.4,"t":"2039-04-19T13:55:00Z","terrain":0.16},{"above_terrain":false,"airmass":null,"alt":-16.38,"az":323.4,"t":"2039-04-19T14:00:00Z","terrain":-0.05},{"above_terrain":false,"airmass":null,"alt":-16.93,"az":324.5,"t":"2039-04-19T14:05:00Z","terrain":-0.2},{"above_terrain":false,"airmass":null,"alt":-17.46,"az":325.6,"t":"2039-04-19T14:10:00Z","terrain":-0.22},{"above_terrain":false,"airmass":null,"alt":-17.99,"az":326.6,"t":"2039-04-19T14:15:00Z","terrain":-0.34},{"above_terrain":false,"airmass":null,"alt":-18.49,"az":327.7,"t":"2039-04-19T14:20:00Z","terrain":-0.27},{"above_terrain":false,"airmass":null,"alt":-18.98,"az":328.8,"t":"2039-04-19T14:25:00Z","terrain":-0.15},{"above_terrain":false,"airmass":null,"alt":-19.46,"az":330.0,"t":"2039-04-19T14:30:00Z","terrain":-0.34},{"above_terrain":false,"airmass":null,"alt":-19.92,"az":331.1,"t":"2039-04-19T14:35:00Z","terrain":-0.37},{"above_terrain":false,"airmass":null,"alt":-20.37,"az":332.2,"t":"2039-04-19T14:40:00Z","terrain":-0.14},{"above_terrain":false,"airmass":null,"alt":-20.79,"az":333.4,"t":"2039-04-19T14:45:00Z","terrain":-0.16},{"above_terrain":false,"airmass":null,"alt":-21.21,"az":334.5,"t":"2039-04-19T14:50:00Z","terrain":-0.42},{"above_terrain":false,"airmass":null,"alt":-21.6,"az":335.7,"t":"2039-04-19T14:55:00Z","terrain":-0.75},{"above_terrain":false,"airmass":null,"alt":-21.98,"az":336.9,"t":"2039-04-19T15:00:00Z","terrain":-0.74},{"above_terrain":false,"airmass":null,"alt":-22.33,"az":338.0,"t":"2039-04-19T15:05:00Z","terrain":-0.48},{"above_terrain":false,"airmass":null,"alt":-22.68,"az":339.2,"t":"2039-04-19T15:10:00Z","terrain":-0.7},{"above_terrain":false,"airmass":null,"alt":-23.0,"az":340.4,"t":"2039-04-19T15:15:00Z","terrain":-0.49},{"above_terrain":false,"airmass":null,"alt":-23.3,"az":341.7,"t":"2039-04-19T15:20:00Z","terrain":-0.47},{"above_terrain":false,"airmass":null,"alt":-23.59,"az":342.9,"t":"2039-04-19T15:25:00Z","terrain":-0.4},{"above_terrain":false,"airmass":null,"alt":-23.85,"az":344.1,"t":"2039-04-19T15:30:00Z","terrain":-0.41},{"above_terrain":false,"airmass":null,"alt":-24.1,"az":345.3,"t":"2039-04-19T15:35:00Z","terrain":-0.45},{"above_terrain":false,"airmass":null,"alt":-24.33,"az":346.6,"t":"2039-04-19T15:40:00Z","terrain":-0.47},{"above_terrain":false,"airmass":null,"alt":-24.53,"az":347.8,"t":"2039-04-19T15:45:00Z","terrain":-0.19},{"above_terrain":false,"airmass":null,"alt":-24.72,"az":349.1,"t":"2039-04-19T15:50:00Z","terrain":0.01},{"above_terrain":false,"airmass":null,"alt":-24.89,"az":350.3,"t":"2039-04-19T15:55:00Z","terrain":0.14},{"above_terrain":false,"airmass":null,"alt":-25.03,"az":351.6,"t":"2039-04-19T16:00:00Z","terrain":0.22},{"above_terrain":false,"airmass":null,"alt":-25.16,"az":352.9,"t":"2039-04-19T16:05:00Z","terrain":0.47},{"above_terrain":false,"airmass":null,"alt":-25.27,"az":354.2,"t":"2039-04-19T16:10:00Z","terrain":0.62},{"above_terrain":false,"airmass":null,"alt":-25.35,"az":355.4,"t":"2039-04-19T16:15:00Z","terrain":0.68},{"above_terrain":false,"airmass":null,"alt":-25.42,"az":356.7,"t":"2039-04-19T16:20:00Z","terrain":0.75},{"above_terrain":false,"airmass":null,"alt":-25.46,"az":358.0,"t":"2039-04-19T16:25:00Z","terrain":0.62},{"above_terrain":false,"airmass":null,"alt":-25.48,"az":359.3,"t":"2039-04-19T16:30:00Z","terrain":0.59},{"above_terrain":false,"airmass":null,"alt":-25.48,"az":0.5,"t":"2039-04-19T16:35:00Z","terrain":0.43},{"above_terrain":false,"airmass":null,"alt":-25.46,"az":1.8,"t":"2039-04-19T16:40:00Z","terrain":0.17},{"above_terrain":false,"airmass":null,"alt":-25.42,"az":3.1,"t":"2039-04-19T16:45:00Z","terrain":-0.14},{"above_terrain":false,"airmass":null,"alt":-25.36,"az":4.4,"t":"2039-04-19T16:50:00Z","terrain":-0.34},{"above_terrain":false,"airmass":null,"alt":-25.28,"az":5.6,"t":"2039-04-19T16:55:00Z","terrain":-0.53},{"above_terrain":false,"airmass":null,"alt":-25.18,"az":6.9,"t":"2039-04-19T17:00:00Z","terrain":-0.42},{"above_terrain":false,"airmass":null,"alt":-25.06,"az":8.2,"t":"2039-04-19T17:05:00Z","terrain":-0.46},{"above_terrain":false,"airmass":null,"alt":-24.91,"az":9.5,"t":"2039-04-19T17:10:00Z","terrain":-0.63},{"above_terrain":false,"airmass":null,"alt":-24.75,"az":10.7,"t":"2039-04-19T17:15:00Z","terrain":-0.46},{"above_terrain":false,"airmass":null,"alt":-24.56,"az":12.0,"t":"2039-04-19T17:20:00Z","terrain":-0.19},{"above_terrain":false,"airmass":null,"alt":-24.36,"az":13.2,"t":"2039-04-19T17:25:00Z","terrain":-0.03},{"above_terrain":false,"airmass":null,"alt":-24.14,"az":14.5,"t":"2039-04-19T17:30:00Z","terrain":0.24},{"above_terrain":false,"airmass":null,"alt":-23.89,"az":15.7,"t":"2039-04-19T17:35:00Z","terrain":0.47},{"above_terrain":false,"airmass":null,"alt":-23.63,"az":16.9,"t":"2039-04-19T17:40:00Z","terrain":0.47},{"above_terrain":false,"airmass":null,"alt":-23.35,"az":18.1,"t":"2039-04-19T17:45:00Z","terrain":0.54},{"above_terrain":false,"airmass":null,"alt":-23.05,"az":19.4,"t":"2039-04-19T17:50:00Z","terrain":0.64},{"above_terrain":false,"airmass":null,"alt":-22.73,"az":20.6,"t":"2039-04-19T17:55:00Z","terrain":0.68},{"above_terrain":false,"airmass":null,"alt":-22.39,"az":21.8,"t":"2039-04-19T18:00:00Z","terrain":0.92},{"above_terrain":false,"airmass":null,"alt":-22.03,"az":23.0,"t":"2039-04-19T18:05:00Z","terrain":1.15},{"above_terrain":false,"airmass":null,"alt":-21.66,"az":24.1,"t":"2039-04-19T18:10:00Z","terrain":0.96},{"above_terrain":false,"airmass":null,"alt":-21.27,"az":25.3,"t":"2039-04-19T18:15:00Z","terrain":1.26},{"above_terrain":false,"airmass":null,"alt":-20.86,"az":26.5,"t":"2039-04-19T18:20:00Z","terrain":1.31},{"above_terrain":false,"airmass":null,"alt":-20.43,"az":27.6,"t":"2039-04-19T18:25:00Z","terrain":1.23},{"above_terrain":false,"airmass":null,"alt":-19.99,"az":28.7,"t":"2039-04-19T18:30:00Z","terrain":1.05},{"above_terrain":false,"airmass":null,"alt":-19.53,"az":29.9,"t":"2039-04-19T18:35:00Z","terrain":1.13},{"above_terrain":false,"airmass":null,"alt":-19.06,"az":31.0,"t":"2039-04-19T18:40:00Z","terrain":1.31},{"above_terrain":false,"airmass":null,"alt":-18.57,"az":32.1,"t":"2039-04-19T18:45:00Z","terrain":1.3},{"above_terrain":false,"airmass":null,"alt":-18.07,"az":33.2,"t":"2039-04-19T18:50:00Z","terrain":0.89},{"above_terrain":false,"airmass":null,"alt":-17.55,"az":34.3,"t":"2039-04-19T18:55:00Z","terrain":0.33},{"above_terrain":false,"airmass":null,"alt":-17.01,"az":35.3,"t":"2039-04-19T19:00:00Z","terrain":0.04},{"above_terrain":false,"airmass":null,"alt":-16.46,"az":36.4,"t":"2039-04-19T19:05:00Z","terrain":-0.02},{"above_terrain":false,"airmass":null,"alt":-15.9,"az":37.5,"t":"2039-04-19T19:10:00Z","terrain":-0.14},{"above_terrain":false,"airmass":null,"alt":-15.33,"az":38.5,"t":"2039-04-19T19:15:00Z","terrain":-0.19},{"above_terrain":false,"airmass":null,"alt":-14.74,"az":39.5,"t":"2039-04-19T19:20:00Z","terrain":-0.1},{"above_terrain":false,"airmass":null,"alt":-14.13,"az":40.5,"t":"2039-04-19T19:25:00Z","terrain":-0.01},{"above_terrain":false,"airmass":null,"alt":-13.52,"az":41.5,"t":"2039-04-19T19:30:00Z","terrain":0.07},{"above_terrain":false,"airmass":null,"alt":-12.89,"az":42.5,"t":"2039-04-19T19:35:00Z","terrain":0.19},{"above_terrain":false,"airmass":null,"alt":-12.25,"az":43.5,"t":"2039-04-19T19:40:00Z","terrain":0.33},{"above_terrain":false,"airmass":null,"alt":-11.6,"az":44.5,"t":"2039-04-19T19:45:00Z","terrain":0.5},{"above_terrain":false,"airmass":null,"alt":-10.94,"az":45.5,"t":"2039-04-19T19:50:00Z","terrain":0.62},{"above_terrain":false,"airmass":null,"alt":-10.27,"az":46.4,"t":"2039-04-19T19:55:00Z","terrain":0.64},{"above_terrain":false,"airmass":null,"alt":-9.59,"az":47.4,"t":"2039-04-19T20:00:00Z","terrain":0.58},{"above_terrain":false,"airmass":null,"alt":-8.89,"az":48.3,"t":"2039-04-19T20:05:00Z","terrain":0.49},{"above_terrain":false,"airmass":null,"alt":-8.19,"az":49.2,"t":"2039-04-19T20:10:00Z","terrain":0.41},{"above_terrain":false,"airmass":null,"alt":-7.47,"az":50.2,"t":"2039-04-19T20:15:00Z","terrain":0.42},{"above_terrain":false,"airmass":null,"alt":-6.75,"az":51.1,"t":"2039-04-19T20:20:00Z","terrain":0.54},{"above_terrain":false,"airmass":null,"alt":-6.02,"az":52.0,"t":"2039-04-19T20:25:00Z","terrain":0.63},{"above_terrain":false,"airmass":null,"alt":-5.28,"az":52.9,"t":"2039-04-19T20:30:00Z","terrain":0.81},{"above_terrain":false,"airmass":null,"alt":-4.53,"az":53.7,"t":"2039-04-19T20:35:00Z","terrain":0.96},{"above_terrain":false,"airmass":null,"alt":-3.77,"az":54.6,"t":"2039-04-19T20:40:00Z","terrain":1.05},{"above_terrain":false,"airmass":null,"alt":-3.0,"az":55.5,"t":"2039-04-19T20:45:00Z","terrain":1.07},{"above_terrain":false,"airmass":null,"alt":-2.23,"az":56.3,"t":"2039-04-19T20:50:00Z","terrain":1.06},{"above_terrain":false,"airmass":null,"alt":-1.44,"az":57.2,"t":"2039-04-19T20:55:00Z","terrain":1.1},{"above_terrain":false,"airmass":null,"alt":-0.65,"az":58.0,"t":"2039-04-19T21:00:00Z","terrain":1.25},{"above_terrain":false,"airmass":35.84,"alt":0.14,"az":58.9,"t":"2039-04-19T21:05:00Z","terrain":1.22},{"above_terrain":false,"airmass":26.76,"alt":0.95,"az":59.7,"t":"2039-04-19T21:10:00Z","terrain":1.18},{"above_terrain":true,"airmass":20.78,"alt":1.76,"az":60.5,"t":"2039-04-19T21:15:00Z","terrain":1.13},{"above_terrain":true,"airmass":16.73,"alt":2.58,"az":61.3,"t":"2039-04-19T21:20:00Z","terrain":1.06},{"above_terrain":true,"airmass":13.87,"alt":3.4,"az":62.1,"t":"2039-04-19T21:25:00Z","terrain":1.0},{"above_terrain":true,"airmass":11.77,"alt":4.23,"az":62.9,"t":"2039-04-19T21:30:00Z","terrain":0.92},{"above_terrain":true,"airmass":10.19,"alt":5.07,"az":63.7,"t":"2039-04-19T21:35:00Z","terrain":0.81},{"above_terrain":true,"airmass":8.95,"alt":5.91,"az":64.5,"t":"2039-04-19T21:40:00Z","terrain":0.77},{"above_terrain":true,"airmass":7.97,"alt":6.76,"az":65.3,"t":"2039-04-19T21:45:00Z","terrain":0.79},{"above_terrain":true,"airmass":7.17,"alt":7.61,"az":66.1,"t":"2039-04-19T21:50:00Z","terrain":0.84},{"above_terrain":true,"airmass":6.51,"alt":8.47,"az":66.9,"t":"2039-04-19T21:55:00Z","terrain":0.92},{"above_terrain":true,"airmass":5.95,"alt":9.33,"az":67.7,"t":"2039-04-19T22:00:00Z","terrain":0.97},{"above_terrain":true,"airmass":5.48,"alt":10.2,"az":68.4,"t":"2039-04-19T22:05:00Z","terrain":1.02},{"above_terrain":true,"airmass":5.08,"alt":11.08,"az":69.2,"t":"2039-04-19T22:10:00Z","terrain":1.09},{"above_terrain":true,"airmass":4.73,"alt":11.95,"az":70.0,"t":"2039-04-19T22:15:00Z","terrain":1.22},{"above_terrain":true,"airmass":4.42,"alt":12.83,"az":70.7,"t":"2039-04-19T22:20:00Z","terrain":1.25},{"above_terrain":true,"airmass":4.15,"alt":13.72,"az":71.5,"t":"2039-04-19T22:25:00Z","terrain":1.23},{"above_terrain":true,"airmass":3.91,"alt":14.61,"az":72.3,"t":"2039-04-19T22:30:00Z","terrain":1.14},{"above_terrain":true,"airmass":3.7,"alt":15.5,"az":73.0,"t":"2039-04-19T22:35:00Z","terrain":0.98},{"above_terrain":true,"airmass":3.5,"alt":16.4,"az":73.8,"t":"2039-04-19T22:40:00Z","terrain":0.79},{"above_terrain":true,"airmass":3.33,"alt":17.3,"az":74.5,"t":"2039-04-19T22:45:00Z","terrain":0.68},{"above_terrain":true,"airmass":3.17,"alt":18.2,"az":75.3,"t":"2039-04-19T22:50:00Z","terrain":0.66},{"above_terrain":true,"airmass":3.03,"alt":19.11,"az":76.0,"t":"2039-04-19T22:55:00Z","terrain":0.72},{"above_terrain":true,"airmass":2.9,"alt":20.02,"az":76.8,"t":"2039-04-19T23:00:00Z","terrain":0.7},{"above_terrain":true,"airmass":2.78,"alt":20.93,"az":77.6,"t":"2039-04-19T23:05:00Z","terrain":0.66},{"above_terrain":true,"airmass":2.67,"alt":21.85,"az":78.3,"t":"2039-04-19T23:10:00Z","terrain":0.61},{"above_terrain":true,"airmass":2.57,"alt":22.77,"az":79.1,"t":"2039-04-19T23:15:00Z","terrain":0.56},{"above_terrain":true,"airmass":2.48,"alt":23.69,"az":79.8,"t":"2039-04-19T23:20:00Z","terrain":0.48},{"above_terrain":true,"airmass":2.39,"alt":24.61,"az":80.6,"t":"2039-04-19T23:25:00Z","terrain":0.59},{"above_terrain":true,"airmass":2.31,"alt":25.53,"az":81.4,"t":"2039-04-19T23:30:00Z","terrain":0.72},{"above_terrain":true,"airmass":2.24,"alt":26.46,"az":82.1,"t":"2039-04-19T23:35:00Z","terrain":0.76},{"above_terrain":true,"airmass":2.17,"alt":27.39,"az":82.9,"t":"2039-04-19T23:40:00Z","terrain":0.5},{"above_terrain":true,"airmass":2.1,"alt":28.32,"az":83.7,"t":"2039-04-19T23:45:00Z","terrain":0.41},{"above_terrain":true,"airmass":2.04,"alt":29.25,"az":84.5,"t":"2039-04-19T23:50:00Z","terrain":0.34},{"above_terrain":true,"airmass":1.98,"alt":30.18,"az":85.2,"t":"2039-04-19T23:55:00Z","terrain":0.27},{"above_terrain":true,"airmass":1.93,"alt":31.11,"az":86.0,"t":"2039-04-20T00:00:00Z","terrain":0.17},{"above_terrain":true,"airmass":1.88,"alt":32.05,"az":86.8,"t":"2039-04-20T00:05:00Z","terrain":0.09},{"above_terrain":true,"airmass":1.83,"alt":32.98,"az":87.6,"t":"2039-04-20T00:10:00Z","terrain":-0.02},{"above_terrain":true,"airmass":1.79,"alt":33.92,"az":88.5,"t":"2039-04-20T00:15:00Z","terrain":-0.13},{"above_terrain":true,"airmass":1.75,"alt":34.85,"az":89.3,"t":"2039-04-20T00:20:00Z","terrain":-0.21},{"above_terrain":true,"airmass":1.71,"alt":35.79,"az":90.1,"t":"2039-04-20T00:25:00Z","terrain":-0.21},{"above_terrain":true,"airmass":1.67,"alt":36.73,"az":90.9,"t":"2039-04-20T00:30:00Z","terrain":-0.1},{"above_terrain":true,"airmass":1.63,"alt":37.66,"az":91.8,"t":"2039-04-20T00:35:00Z","terrain":0.06},{"above_terrain":true,"airmass":1.6,"alt":38.6,"az":92.7,"t":"2039-04-20T00:40:00Z","terrain":0.25},{"above_terrain":true,"airmass":1.57,"alt":39.53,"az":93.5,"t":"2039-04-20T00:45:00Z","terrain":0.37},{"above_terrain":true,"airmass":1.54,"alt":40.46,"az":94.4,"t":"2039-04-20T00:50:00Z","terrain":0.4},{"above_terrain":true,"airmass":1.51,"alt":41.4,"az":95.3,"t":"2039-04-20T00:55:00Z","terrain":0.44},{"above_terrain":true,"airmass":1.48,"alt":42.33,"az":96.2,"t":"2039-04-20T01:00:00Z","terrain":0.59},{"above_terrain":true,"airmass":1.46,"alt":43.26,"az":97.2,"t":"2039-04-20T01:05:00Z","terrain":0.72},{"above_terrain":true,"airmass":1.43,"alt":44.19,"az":98.1,"t":"2039-04-20T01:10:00Z","terrain":0.65},{"above_terrain":true,"airmass":1.41,"alt":45.11,"az":99.1,"t":"2039-04-20T01:15:00Z","terrain":0.46},{"above_terrain":true,"airmass":1.39,"alt":46.03,"az":100.1,"t":"2039-04-20T01:20:00Z","terrain":0.25},{"above_terrain":true,"airmass":1.37,"alt":46.95,"az":101.1,"t":"2039-04-20T01:25:00Z","terrain":0.07},{"above_terrain":true,"airmass":1.35,"alt":47.87,"az":102.1,"t":"2039-04-20T01:30:00Z","terrain":-0.07},{"above_terrain":true,"airmass":1.33,"alt":48.78,"az":103.2,"t":"2039-04-20T01:35:00Z","terrain":-0.17},{"above_terrain":true,"airmass":1.31,"alt":49.69,"az":104.3,"t":"2039-04-20T01:40:00Z","terrain":-0.06},{"above_terrain":true,"airmass":1.29,"alt":50.6,"az":105.4,"t":"2039-04-20T01:45:00Z","terrain":-0.39},{"above_terrain":true,"airmass":1.28,"alt":51.5,"az":106.6,"t":"2039-04-20T01:50:00Z","terrain":-0.62},{"above_terrain":true,"airmass":1.26,"alt":52.39,"az":107.8,"t":"2039-04-20T01:55:00Z","terrain":-0.86},{"above_terrain":true,"airmass":1.25,"alt":53.28,"az":109.0,"t":"2039-04-20T02:00:00Z","terrain":-1.19},{"above_terrain":true,"airmass":1.23,"alt":54.16,"az":110.3,"t":"2039-04-20T02:05:00Z","terrain":-1.2},{"above_terrain":true,"airmass":1.22,"alt":55.04,"az":111.6,"t":"2039-04-20T02:10:00Z","terrain":-1.36},{"above_terrain":true,"airmass":1.21,"alt":55.9,"az":112.9,"t":"2039-04-20T02:15:00Z","terrain":-1.43},{"above_terrain":true,"airmass":1.19,"alt":56.76,"az":114.3,"t":"2039-04-20T02:20:00Z","terrain":-1.59},{"above_terrain":true,"airmass":1.18,"alt":57.61,"az":115.7,"t":"2039-04-20T02:25:00Z","terrain":-1.48},{"above_terrain":true,"airmass":1.17,"alt":58.44,"az":117.3,"t":"2039-04-20T02:30:00Z","terrain":-1.58},{"above_terrain":true,"airmass":1.16,"alt":59.27,"az":118.8,"t":"2039-04-20T02:35:00Z","terrain":-1.47},{"above_terrain":true,"airmass":1.15,"alt":60.08,"az":120.4,"t":"2039-04-20T02:40:00Z","terrain":-1.24},{"above_terrain":true,"airmass":1.14,"alt":60.88,"az":122.1,"t":"2039-04-20T02:45:00Z","terrain":-1.22},{"above_terrain":true,"airmass":1.14,"alt":61.67,"az":123.9,"t":"2039-04-20T02:50:00Z","terrain":-1.47},{"above_terrain":true,"airmass":1.13,"alt":62.44,"az":125.7,"t":"2039-04-20T02:55:00Z","terrain":-1.61},{"above_terrain":true,"airmass":1.12,"alt":63.19,"az":127.7,"t":"2039-04-20T03:00:00Z","terrain":-1.45},{"above_terrain":true,"airmass":1.11,"alt":63.92,"az":129.7,"t":"2039-04-20T03:05:00Z","terrain":-1.41},{"above_terrain":true,"airmass":1.11,"alt":64.63,"az":131.8,"t":"2039-04-20T03:10:00Z","terrain":-1.65},{"above_terrain":true,"airmass":1.1,"alt":65.31,"az":134.0,"t":"2039-04-20T03:15:00Z","terrain":-1.54},{"above_terrain":true,"airmass":1.09,"alt":65.98,"az":136.3,"t":"2039-04-20T03:20:00Z","terrain":-1.2},{"above_terrain":true,"airmass":1.09,"alt":66.61,"az":138.7,"t":"2039-04-20T03:25:00Z","terrain":-1.27},{"above_terrain":true,"airmass":1.08,"alt":67.21,"az":141.2,"t":"2039-04-20T03:30:00Z","terrain":-1.14},{"above_terrain":true,"airmass":1.08,"alt":67.78,"az":143.8,"t":"2039-04-20T03:35:00Z","terrain":-1.34},{"above_terrain":true,"airmass":1.08,"alt":68.32,"az":146.5,"t":"2039-04-20T03:40:00Z","terrain":-1.39},{"above_terrain":true,"airmass":1.07,"alt":68.81,"az":149.4,"t":"2039-04-20T03:45:00Z","terrain":-1.34},{"above_terrain":true,"airmass":1.07,"alt":69.27,"az":152.4,"t":"2039-04-20T03:50:00Z","terrain":-1.13},{"above_terrain":true,"airmass":1.07,"alt":69.68,"az":155.4,"t":"2039-04-20T03:55:00Z","terrain":-1.16},{"above_terrain":true,"airmass":1.06,"alt":70.04,"az":158.6,"t":"2039-04-20T04:00:00Z","terrain":-1.23},{"above_terrain":true,"airmass":1.06,"alt":70.36,"az":161.9,"t":"2039-04-20T04:05:00Z","terrain":-1.35},{"above_terrain":true,"airmass":1.06,"alt":70.62,"az":165.3,"t":"2039-04-20T04:10:00Z","terrain":-1.35},{"above_terrain":true,"airmass":1.06,"alt":70.83,"az":168.7,"t":"2039-04-20T04:15:00Z","terrain":-0.86},{"above_terrain":true,"airmass":1.06,"alt":70.99,"az":172.2,"t":"2039-04-20T04:20:00Z","terrain":-0.57},{"above_terrain":true,"airmass":1.06,"alt":71.09,"az":175.8,"t":"2039-04-20T04:25:00Z","terrain":-0.42},{"above_terrain":true,"airmass":1.06,"alt":71.13,"az":179.3,"t":"2039-04-20T04:30:00Z","terrain":-0.47},{"above_terrain":true,"airmass":1.06,"alt":71.11,"az":182.9,"t":"2039-04-20T04:35:00Z","terrain":-0.62},{"above_terrain":true,"airmass":1.06,"alt":71.03,"az":186.5,"t":"2039-04-20T04:40:00Z","terrain":-0.68},{"above_terrain":true,"airmass":1.06,"alt":70.9,"az":190.0,"t":"2039-04-20T04:45:00Z","terrain":-0.56},{"above_terrain":true,"airmass":1.06,"alt":70.71,"az":193.4,"t":"2039-04-20T04:50:00Z","terrain":-0.47},{"above_terrain":true,"airmass":1.06,"alt":70.46,"az":196.8,"t":"2039-04-20T04:55:00Z","terrain":-0.46},{"above_terrain":true,"airmass":1.06,"alt":70.17,"az":200.2,"t":"2039-04-20T05:00:00Z","terrain":-0.29},{"above_terrain":true,"airmass":1.06,"alt":69.82,"az":203.4,"t":"2039-04-20T05:05:00Z","terrain":-0.61},{"above_terrain":true,"airmass":1.07,"alt":69.43,"az":206.5,"t":"2039-04-20T05:10:00Z","terrain":0.16},{"above_terrain":true,"airmass":1.07,"alt":68.99,"az":209.5,"t":"2039-04-20T05:15:00Z","terrain":0.48},{"above_terrain":true,"airmass":1.07,"alt":68.5,"az":212.4,"t":"2039-04-20T05:20:00Z","terrain":0.44},{"above_terrain":true,"airmass":1.08,"alt":67.98,"az":215.2,"t":"2039-04-20T05:25:00Z","terrain":0.64},{"above_terrain":true,"airmass":1.08,"alt":67.43,"az":217.9,"t":"2039-04-20T05:30:00Z","terrain":1.23},{"above_terrain":true,"airmass":1.09,"alt":66.84,"az":220.4,"t":"2039-04-20T05:35:00Z","terrain":1.18},{"above_terrain":true,"airmass":1.09,"alt":66.21,"az":222.9,"t":"2039-04-20T05:40:00Z","terrain":0.78},{"above_terrain":true,"airmass":1.1,"alt":65.56,"az":225.2,"t":"2039-04-20T05:45:00Z","terrain":0.42},{"above_terrain":true,"airmass":1.1,"alt":64.89,"az":227.4,"t":"2039-04-20T05:50:00Z","terrain":1.05},{"above_terrain":true,"airmass":1.11,"alt":64.19,"az":229.6,"t":"2039-04-20T05:55:00Z","terrain":1.22},{"above_terrain":true,"airmass":1.12,"alt":63.46,"az":231.6,"t":"2039-04-20T06:00:00Z","terrain":0.89},{"above_terrain":true,"airmass":1.12,"alt":62.72,"az":233.6,"t":"2039-04-20T06:05:00Z","terrain":0.81},{"above_terrain":true,"airmass":1.13,"alt":61.96,"az":235.4,"t":"2039-04-20T06:10:00Z","terrain":0.89},{"above_terrain":true,"airmass":1.14,"alt":61.18,"az":237.2,"t":"2039-04-20T06:15:00Z","terrain":0.82},{"above_terrain":true,"airmass":1.15,"alt":60.38,"az":238.9,"t":"2039-04-20T06:20:00Z","terrain":0.52},{"above_terrain":true,"airmass":1.16,"alt":59.57,"az":240.6,"t":"2039-04-20T06:25:00Z","terrain":0.77},{"above_terrain":true,"airmass":1.17,"alt":58.75,"az":242.2,"t":"2039-04-20T06:30:00Z","terrain":1.03},{"above_terrain":true,"airmass":1.18,"alt":57.92,"az":243.7,"t":"2039-04-20T06:35:00Z","terrain":0.96},{"above_terrain":true,"airmass":1.19,"alt":57.08,"az":245.2,"t":"2039-04-20T06:40:00Z","terrain":1.02},{"above_terrain":true,"airmass":1.2,"alt":56.22,"az":246.6,"t":"2039-04-20T06:45:00Z","terrain":1.09},{"above_terrain":true,"airmass":1.21,"alt":55.36,"az":247.9,"t":"2039-04-20T06:50:00Z","terrain":0.6},{"above_terrain":true,"airmass":1.23,"alt":54.49,"az":249.3,"t":"2039-04-20T06:55:00Z","terrain":0.52},{"above_terrain":true,"airmass":1.24,"alt":53.61,"az":250.5,"t":"2039-04-20T07:00:00Z","terrain":0.57},{"above_terrain":true,"airmass":1.26,"alt":52.72,"az":251.8,"t":"2039-04-20T07:05:00Z","terrain":0.28},{"above_terrain":true,"airmass":1.27,"alt":51.83,"az":253.0,"t":"2039-04-20T07:10:00Z","terrain":0.17},{"above_terrain":true,"airmass":1.29,"alt":50.93,"az":254.1,"t":"2039-04-20T07:15:00Z","terrain":0.18},{"above_terrain":true,"airmass":1.3,"alt":50.03,"az":255.3,"t":"2039-04-20T07:20:00Z","terrain":0.28},{"above_terrain":true,"airmass":1.32,"alt":49.12,"az":256.4,"t":"2039-04-20T07:25:00Z","terrain":0.41},{"above_terrain":true,"airmass":1.34,"alt":48.21,"az":257.5,"t":"2039-04-20T07:30:00Z","terrain":0.4},{"above_terrain":true,"airmass":1.36,"alt":47.29,"az":258.5,"t":"2039-04-20T07:35:00Z","terrain":0.42},{"above_terrain":true,"airmass":1.38,"alt":46.38,"az":259.5,"t":"2039-04-20T07:40:00Z","terrain":0.52},{"above_terrain":true,"airmass":1.4,"alt":45.45,"az":260.5,"t":"2039-04-20T07:45:00Z","terrain":0.71},{"above_terrain":true,"airmass":1.42,"alt":44.53,"az":261.5,"t":"2039-04-20T07:50:00Z","terrain":0.91},{"above_terrain":true,"airmass":1.45,"alt":43.6,"az":262.5,"t":"2039-04-20T07:55:00Z","terrain":0.9},{"above_terrain":true,"airmass":1.47,"alt":42.67,"az":263.4,"t":"2039-04-20T08:00:00Z","terrain":0.69},{"above_terrain":true,"airmass":1.5,"alt":41.74,"az":264.3,"t":"2039-04-20T08:05:00Z","terrain":0.48},{"above_terrain":true,"airmass":1.53,"alt":40.81,"az":265.2,"t":"2039-04-20T08:10:00Z","terrain":0.41},{"above_terrain":true,"airmass":1.56,"alt":39.88,"az":266.1,"t":"2039-04-20T08:15:00Z","terrain":0.48},{"above_terrain":true,"airmass":1.59,"alt":38.94,"az":267.0,"t":"2039-04-20T08:20:00Z","terrain":0.57},{"above_terrain":true,"airmass":1.62,"alt":38.01,"az":267.9,"t":"2039-04-20T08:25:00Z","terrain":0.64},{"above_terrain":true,"airmass":1.66,"alt":37.07,"az":268.7,"t":"2039-04-20T08:30:00Z","terrain":0.72},{"above_terrain":true,"airmass":1.69,"alt":36.14,"az":269.6,"t":"2039-04-20T08:35:00Z","terrain":0.84},{"above_terrain":true,"airmass":1.73,"alt":35.2,"az":270.4,"t":"2039-04-20T08:40:00Z","terrain":0.85},{"above_terrain":true,"airmass":1.77,"alt":34.26,"az":271.2,"t":"2039-04-20T08:45:00Z","terrain":0.69},{"above_terrain":true,"airmass":1.82,"alt":33.33,"az":272.1,"t":"2039-04-20T08:50:00Z","terrain":0.4},{"above_terrain":true,"airmass":1.86,"alt":32.39,"az":272.9,"t":"2039-04-20T08:55:00Z","terrain":0.18},{"above_terrain":true,"airmass":1.91,"alt":31.46,"az":273.7,"t":"2039-04-20T09:00:00Z","terrain":0.03}],"transit":{"airmass":1.06,"alt":71.1,"az":179.3,"t":"2039-04-20T04:30:00Z"},"usable_hours":2.92,"verdict":"marginal","zenith_passage":false},"warnings":["No cloud data for this night (beyond the 4-day forecast, or not yet in the archive) \u2014 the score is geometry only."]}