condition	mean	min	max
4 h after light	7.988803333333333	7.714919999999999	8.23418
8 h after light	7.955746666666666	7.73251	8.23719
12 h after light	7.9713199999999995	7.6028899999999995	8.17508
4 h after dark	7.53177	7.1037	7.85593
8 h after dark	7.66868	7.29935	8.09573
12 h after dark	7.755236666666667	7.5578899999999996	7.95206