condition	mean	min	max
4 h after light	5.936123333333333	5.757999999999999	6.05354
8 h after light	5.850386666666666	5.76417	5.91259
12 h after light	6.113933333333334	6.04111	6.2289900000000005
4 h after dark	5.93503	5.82517	6.09131
8 h after dark	5.9799	5.7640400000000005	6.19956
12 h after dark	5.833173333333334	5.66686	5.95038