condition	mean	min	max
4 h after light	8.19859	7.92374	8.45865
8 h after light	8.328356666666666	8.11024	8.50212
12 h after light	7.86439	7.80053	7.9772300000000005
4 h after dark	7.47086	7.07503	7.6817899999999995
8 h after dark	7.116499999999999	6.69124	7.60957
12 h after dark	6.480473333333333	6.36001	6.62973