condition mean min max 4 h after light 4.47228 4.3633 4.57935 8 h after light 4.511456666666667 4.41111 4.583469999999999 12 h after light 4.3402199999999995 4.2678199999999995 4.44613 4 h after dark 4.4985 4.33712 4.6170599999999995 8 h after dark 4.450373333333333 4.27412 4.61679 12 h after dark 4.534786666666667 4.39135 4.8009900000000005