condition	mean	min	max
4 h after light	17.8098	16.7242	18.8954
8 h after light	12.36475	12.2588	12.4707
12 h after light	11.5881	11.5207	11.6555
4 h after dark	13.514949999999999	13.4615	13.5684
8 h after dark	17.41405	17.2093	17.6188
12 h after dark	19.747950000000003	19.7084	19.7875