condition mean min max 2 h after light 6.345476666666666 5.05479 7.04187 6 h after light 6.064753333333333 4.07869 8.65312 10 h after light 6.76379 3.93134 10.3416 14 h after light 6.463053333333333 3.05349 9.6481 18 h after light 7.117325 4.97834 10.4474 2 h after dark 9.667145 8.63724 11.2086