condition	mean	min	max
4 h after light	8.48114	8.197560000000001	8.67446
8 h after light	7.334763333333334	7.2632	7.381660000000001
12 h after light	7.967963333333333	7.84098	8.093169999999999
4 h after dark	8.59817	8.331660000000001	8.73584
8 h after dark	9.34963	9.053469999999999	9.668569999999999
12 h after dark	10.026496666666667	9.91302	10.202919999999999