condition mean min max 0 h after light 3.639105 3.53751 3.7407 4 h after light 2.36408 2.32519 2.40297 8 h after light 4.402875 2.00054 6.80521 4 h after dark 10.826065 8.72003 12.9321 8 h after dark 6.215805 5.27005 7.16156 12 h after dark 3.189195 1.96264 4.41575