condition mean min max 4 h after light 7.924659999999999 7.05834 8.79098 8 h after light 8.32368 6.28996 10.3574 12 h after light 8.58211 7.72474 9.43948 4 h after dark 11.7572 10.3021 13.2891 8 h after dark 12.626833333333334 11.7236 13.4403 12 h after dark 12.488203333333333 9.45461 14.7021