condition	mean	min	max
4 h after light	15.882200000000001	14.173	17.5914
8 h after light	22.27915	21.3725	23.1858
12 h after light	19.67535	18.4979	20.8528
4 h after dark	18.619	18.5125	18.7255
8 h after dark	19.3453	19.1192	19.5714
12 h after dark	18.323050000000002	17.9208	18.7253