condition	mean	min	max
4 h after light	7.97242	7.902019999999999	8.0697
8 h after light	7.68735	7.402710000000001	8.03632
12 h after light	7.77533	7.5839	7.995710000000001
4 h after dark	7.71807	7.49764	7.84802
8 h after dark	7.7393	7.5667	7.85987
12 h after dark	8.042803333333334	7.9758	8.15451