condition mean min max 0 h after light 4.79271 4.39079 5.19463 4 h after light 6.0236 5.76183 6.28537 8 h after light 5.12165 4.4616 5.7817 4 h after dark 6.390785 5.89895 6.88262 8 h after dark 6.09891 5.64286 6.55496 12 h after dark 7.536385 7.4534 7.61937