condition	mean	min	max
4 h after light	7.795217000000001	7.589265	8.001169
8 h after light	7.6267005	7.486389	7.767012
12 h after light	7.0069099999999995	6.54707	7.46675
4 h after dark	7.8853285	7.74187	8.028787
8 h after dark	7.490671000000001	7.3352	7.646142
12 h after dark	7.486389	7.486389	7.486389