condition mean min max 4 h after light 40.6536335 39.971619 41.335648 8 h after light 48.192176 46.642364 49.741988 12 h after light 43.0659025 36.933338 49.198467 4 h after dark 38.754472 37.438772 40.070172 8 h after dark 35.6627375 30.357049 40.968426 12 h after dark 31.766446 31.766446 31.766446