condition	mean	min	max
4 h after light	6.7253	6.43612	6.92355
8 h after light	6.750196666666667	6.53142	6.90745
12 h after light	6.840366666666666	6.72779	6.929689999999999
4 h after dark	7.21488	6.9983	7.5582
8 h after dark	7.1343733333333335	6.90717	7.35987
12 h after dark	7.034540000000001	6.8627	7.12661