condition	mean	min	max
4 h after light	7.5877	7.5487	7.643660000000001
8 h after light	7.642156666666667	7.453239999999999	7.76255
12 h after light	7.51127	7.357939999999999	7.59598
4 h after dark	7.5279066666666665	7.37471	7.65797
8 h after dark	7.5929166666666665	7.342169999999999	7.86605
12 h after dark	7.55964	7.306780000000001	7.734