condition	mean	min	max
4 h after light	7.16353	5.91209	8.41497
8 h after light	13.738199999999999	13.5434	13.933
12 h after light	17.05865	16.1227	17.9946
4 h after dark	18.99285	17.7394	20.2463
8 h after dark	17.3722	16.7166	18.0278
12 h after dark	13.245149999999999	13.1881	13.3022