condition mean min max 4 h after light 12009.1 12009.1 12009.1 8 h after light 12419.15 10431.8 14406.5 12 h after light 14178.2 12913.2 15443.2 4 h after dark 13567.5 12109.9 15025.1 8 h after dark 13041.9 13000.3 13083.5 12 h after dark 11537.95 11282.9 11793.0