condition mean min max 4 h after light 4.85964 2.71986 6.99942 8 h after light 8.46464 8.4597 8.46958 12 h after light 17.5643 16.5674 18.5612 4 h after dark 10.182523333333332 7.99507 11.5438 8 h after dark 10.677053333333333 7.79246 12.618 12 h after dark 8.572396666666666 8.24236 9.20077