condition	mean	min	max
4 h after light	7.970726666666667	7.64734	8.337660000000001
8 h after light	8.5251	8.32587	8.73025
12 h after light	8.630356666666668	8.22414	8.913110000000001
4 h after dark	8.41679	8.10028	8.699810000000001
8 h after dark	7.967363333333333	7.6689300000000005	8.27822
12 h after dark	7.873256666666667	7.66953	8.18786