condition	mean	min	max
4 h after light	7.28755	7.1551800000000005	7.498480000000001
8 h after light	7.17023	7.03459	7.3847
12 h after light	7.038436666666666	6.881419999999999	7.1914
4 h after dark	7.146993333333333	6.9244699999999995	7.27997
8 h after dark	7.029566666666667	6.9706600000000005	7.112239999999999
12 h after dark	7.089596666666667	6.9873	7.15678