condition	mean	min	max
4 h after light	7.698849999999999	7.595689999999999	7.88417
8 h after light	7.729216666666666	7.58714	7.84172
12 h after light	7.534653333333333	7.44705	7.61092
4 h after dark	7.5733299999999995	7.4008899999999995	7.67028
8 h after dark	7.597573333333334	7.57176	7.61643
12 h after dark	7.778096666666667	7.72635	7.842960000000001