condition mean min max 4 h after light 20.6936 20.4872 20.9 8 h after light 20.28925 20.0266 20.5519 12 h after light 21.3617 21.2645 21.4589 4 h after dark 30.95005 26.9144 34.9857 8 h after dark 26.537999999999997 24.7644 28.3116 12 h after dark 23.7177 23.5175 23.9179