condition mean min max 4 h after light 1.7983500000000001 1.43995 2.15675 8 h after light 0.7033590000000001 0.455873 0.950845 12 h after light 0.584769 0.393898 0.77564 4 h after dark 0.9108989999999999 0.268075 1.83899 8 h after dark 1.9313209999999998 0.649403 3.47449 12 h after dark 1.86655 1.14535 2.52616