condition mean min max 4 h after light 7.028895 6.00103 8.05676 8 h after light 7.475490000000001 7.3814 7.56958 12 h after light 8.651235 7.86831 9.43416 4 h after dark 10.339255 9.30701 11.3715 8 h after dark 8.865739999999999 8.8036 8.92788 12 h after dark 8.86692 8.79855 8.93529