condition	mean	min	max
4 h after light	6.759200000000001	6.57998	6.956160000000001
8 h after light	6.606520000000001	6.46788	6.829560000000001
12 h after light	6.585646666666666	6.46709	6.7812
4 h after dark	7.003176666666667	6.84612	7.2278199999999995
8 h after dark	7.264333333333333	7.17833	7.3160300000000005
12 h after dark	6.987323333333333	6.78017	7.12109