condition	mean	min	max
4 h after light	7.7196533333333335	7.63019	7.76584
8 h after light	7.63401	7.58378	7.73168
12 h after light	7.51731	7.46963	7.5465
4 h after dark	7.613553333333333	7.4713199999999995	7.7365699999999995
8 h after dark	7.569213333333334	7.219810000000001	7.80627
12 h after dark	7.64292	7.48999	7.836110000000001