condition mean min max 4 h after light 8.340705 7.31708 9.36433 8 h after light 5.384265 5.32158 5.44695 12 h after light 6.645785 6.37235 6.91922 4 h after dark 9.849846666666666 9.71797 9.97919 8 h after dark 9.397043333333334 9.23659 9.59096 12 h after dark 8.756029999999999 8.08991 9.42138