condition	mean	min	max
4 h after light	6.315933333333334	6.26674	6.35726
8 h after light	6.34499	6.11944	6.63678
12 h after light	6.436976666666666	6.23171	6.54059
4 h after dark	6.676923333333333	6.52976	6.915719999999999
8 h after dark	6.538663333333333	6.381069999999999	6.8503300000000005
12 h after dark	6.43716	6.1554400000000005	6.62705