condition	mean	min	max
0 h after light	8.359100000000002	8.23891	8.47929
4 h after light	6.8008299999999995	6.52567	7.07599
8 h after light	7.236685	7.03672	7.43665
4 h after dark	9.011534999999999	8.34452	9.67855
8 h after dark	8.910275	8.43839	9.38216
12 h after dark	7.87904	6.79102	8.96706