condition	mean	min	max
4 h after light	20.759962	17.39637	24.123554
8 h after light	17.7681815	17.541308	17.995055
12 h after light	18.876668000000002	17.268262	20.485074
4 h after dark	17.0470835	16.43173	17.662437
8 h after dark	19.1577735	17.995055	20.320492
12 h after dark	17.507505	17.507505	17.507505