condition	mean	min	max
4 h after light	7.463356666666667	7.21042	7.797630000000001
8 h after light	7.29209	7.0457600000000005	7.6947600000000005
12 h after light	7.239823333333333	6.987710000000001	7.593719999999999
4 h after dark	7.507286666666666	6.9618	8.11487
8 h after dark	7.390246666666666	7.083939999999999	7.80495
12 h after dark	7.25966	6.9465	7.43693