condition	mean	min	max
4 h after light	7.58848	7.43987	7.783589999999999
8 h after light	7.60283	7.4428600000000005	7.85283
12 h after light	7.88255	7.716360000000001	8.11139
4 h after dark	7.515476666666666	7.333819999999999	7.77345
8 h after dark	7.454506666666666	7.276039999999999	7.69756
12 h after dark	7.212096666666667	7.13705	7.35307