condition	mean	min	max
4 h after light	7.179603333333333	6.956189999999999	7.473839999999999
8 h after light	7.248383333333333	7.0481	7.476960000000001
12 h after light	7.138850000000001	7.07207	7.249810000000001
4 h after dark	7.091483333333334	6.750769999999999	7.65867
8 h after dark	7.115996666666667	6.83553	7.5778
12 h after dark	7.2575	6.90793	7.64566