condition	mean	min	max
4 h after light	7.99489	7.632639999999999	8.266160000000001
8 h after light	7.359556666666666	7.2145600000000005	7.50484
12 h after light	7.1959800000000005	6.8071600000000005	7.575019999999999
4 h after dark	7.900716666666668	7.569260000000001	8.12733
8 h after dark	7.96831	7.506880000000001	8.265089999999999
12 h after dark	8.35187	7.66725	8.73826