condition	mean	min	max
4 h after light	2.3598749999999997	2.14101	2.57874
8 h after light	2.35161	1.79083	2.91239
12 h after light	2.182325	1.86504	2.49961
4 h after dark	4.92459	4.43274	5.41644
8 h after dark	4.473585	4.47066	4.47651
12 h after dark	3.77341	3.72768	3.81914