condition	mean	min	max
4 h after light	4.087173333333333	4.00456	4.14859
8 h after light	4.16482	4.06096	4.23549
12 h after light	4.0443299999999995	4.0138	4.09633
4 h after dark	4.12354	4.0614	4.20095
8 h after dark	3.99952	3.89477	4.09176
12 h after dark	4.000053333333334	3.9569400000000003	4.0433900000000005