condition	mean	min	max
4 h after light	15.9159565	14.950844	16.881069
8 h after light	19.906263000000003	16.881069	22.931457
12 h after light	13.064329	12.837141	13.291517
4 h after dark	17.443755	16.881069	18.006441
8 h after dark	19.278555	18.239494	20.317616
12 h after dark	17.465675	17.465675	17.465675