condition	mean	min	max
4 h after light	8.28499	8.1716	8.49864
8 h after light	7.867473333333333	7.813389999999999	7.93995
12 h after light	7.598926666666667	7.47315	7.66242
4 h after dark	7.30368	7.01352	7.50955
8 h after dark	7.087293333333333	6.86579	7.28298
12 h after dark	7.31759	7.15066	7.4089100000000006