condition mean min max 4 h after light 6.0893049999999995 5.57696 6.60165 8 h after light 4.7112750000000005 4.26687 5.15568 12 h after light 5.607405 4.00463 7.21018 4 h after dark 7.737480000000001 6.05771 8.84866 8 h after dark 9.158896666666667 8.74689 9.74619 12 h after dark 6.488886666666667 6.27172 6.83878