condition	mean	min	max
4 h after light	7.04897	6.992489999999999	7.1307
8 h after light	6.201953333333334	5.92525	6.4309400000000005
12 h after light	6.659206666666667	6.54895	6.77181
4 h after dark	6.59405	6.4734300000000005	6.76082
8 h after dark	7.0557566666666665	6.90158	7.2602899999999995
12 h after dark	7.43659	7.3378	7.50846