condition mean min max 4 h after light 9.751635 9.12477 10.3785 8 h after light 6.863025 6.69317 7.03288 12 h after light 7.685930000000001 7.40638 7.96548 4 h after dark 11.612833333333333 10.3596 12.3903 8 h after dark 11.303566666666667 10.7179 12.278 12 h after dark 10.634 9.2589 11.6174