condition	mean	min	max
4 h after light	7.87584	7.73619	8.04092
8 h after light	7.80444	7.54213	7.9989
12 h after light	7.821066666666666	7.44407	8.02394
4 h after dark	7.59382	7.305960000000001	7.834560000000001
8 h after dark	7.457856666666666	7.3324300000000004	7.68164
12 h after dark	7.41419	7.282889999999999	7.60733