condition mean min max 0 h after light 4.373265 4.23522 4.51131 4 h after light 4.48693 4.43998 4.53388 8 h after light 8.808805 7.85839 9.75922 4 h after dark 8.967839999999999 8.61623 9.31945 8 h after dark 5.779625 5.70235 5.8569 12 h after dark 4.42381 4.18978 4.65784