condition mean min max 4 h after light 832.6 832.6 832.6 8 h after light 733.15 651.4 814.9 12 h after light 819.1500000000001 633.6 1004.7 4 h after dark 999.45 956.4 1042.5 8 h after dark 1215.6 1107.8 1323.4 12 h after dark 1080.8 847.8 1313.8