condition mean min max 4 h after light 5881.9058035 5822.155134 5941.656473 8 h after light 4031.2946695 2657.403761 5405.185578 12 h after light 1884.269504 1592.452005 2176.087003 4 h after dark 696.199278 297.366086 1095.03247 8 h after dark 580.634279 288.067709 873.200849 12 h after dark 3907.30898 3907.30898 3907.30898