condition	mean	min	max
4 h after light	21.114150000000002	17.0781	25.1502
8 h after light	22.90215	21.3945	24.4098
12 h after light	15.589849999999998	15.5499	15.6298
4 h after dark	10.89735	10.89	10.9047
8 h after dark	11.64885	10.8299	12.4678
12 h after dark	15.7425	15.242	16.243