condition mean min max 0 h after light 3.085825 3.00238 3.16927 2 h after light 2.77588 2.34942 3.20234 4 h after light 2.40419 2.36102 2.44736 8 h after light 3.33164 3.07663 3.58665 12 h after light 7.11188 6.04782 8.17594 2 h after dark 7.1152999999999995 6.8519 7.3787 4 h after dark 6.245889999999999 5.72662 6.76516 8 h after dark 6.099225000000001 5.59818 6.60027 12 h after dark 4.01319 3.99197 4.03441