condition mean min max 4 h after light 61.7926 41.8986 79.524 8 h after light 32.2177 10.6927 57.8545 12 h after light 36.930566666666664 19.2754 62.8974 4 h after dark 53.7556 36.9848 63.3558 8 h after dark 52.536 34.1672 63.5161 12 h after dark 51.636 43.4163 62.5377