condition	mean	min	max
4 h after light	14.7496	12.9985	16.5007
8 h after light	13.81765	13.4465	14.1888
12 h after light	14.2034	13.4536	14.9532
4 h after dark	19.66065	18.0285	21.2928
8 h after dark	18.51415	18.2721	18.7562
12 h after dark	17.92425	17.4538	18.3947