condition	mean	min	max
4 h after light	6.338570000000001	6.0857	6.59144
8 h after light	7.1347249999999995	6.81113	7.45832
12 h after light	8.035205	7.26357	8.80684
4 h after dark	9.02192	8.3037	9.74014
8 h after dark	7.977425	7.97468	7.98017
12 h after dark	9.0993	8.90387	9.29473