condition	mean	min	max
4 h after light	16.36485	15.9627	16.767
8 h after light	7.64343	7.48073	7.80613
12 h after light	12.364650000000001	12.342	12.3873
4 h after dark	15.09085	13.9656	16.2161
8 h after dark	18.44865	16.8883	20.009
12 h after dark	20.655949999999997	19.578	21.7339