condition	mean	min	max
4 h after light	15.55725	13.6957	17.4188
8 h after light	11.79675	11.6425	11.951
12 h after light	12.90505	12.2224	13.5877
4 h after dark	19.73395	18.3727	21.0952
8 h after dark	20.526899999999998	19.9007	21.1531
12 h after dark	18.79195	17.7493	19.8346