condition	mean	min	max
4 h after light	7.97321	7.95671	7.9924
8 h after light	8.026646666666666	7.9165600000000005	8.128039999999999
12 h after light	7.998209999999999	7.8909899999999995	8.13285
4 h after dark	8.3315	8.20253	8.43604
8 h after dark	8.243073333333333	8.15827	8.31171
12 h after dark	8.324	8.24258	8.46895