condition mean min max 0 h after light 3.83437 3.65944 4.0093 4 h after light 3.070265 2.45111 3.68942 8 h after light 5.40164 4.89747 5.90581 4 h after dark 4.790665 4.59364 4.98769 8 h after dark 3.74593 3.50992 3.98194 12 h after dark 2.72337 2.31338 3.13336