condition	mean	min	max
4 h after light	7.838903333333334	7.71011	7.970619999999999
8 h after light	7.74573	7.349589999999999	7.9637199999999995
12 h after light	7.85623	7.722360000000001	7.944889999999999
4 h after dark	7.82037	7.41189	8.05893
8 h after dark	7.78407	7.57873	7.9147300000000005
12 h after dark	7.796883333333334	7.7586	7.861839999999999