condition	mean	min	max
4 h after light	6.0816099999999995	5.26015	6.90307
8 h after light	5.304515	5.24745	5.36158
12 h after light	5.150855	4.67699	5.62472
4 h after dark	9.60107	8.70924	10.4929
8 h after dark	9.51684	9.19284	9.84084
12 h after dark	9.296994999999999	8.10909	10.4849