condition	mean	min	max
4 h after light	7.80371	7.6508899999999995	7.9229899999999995
8 h after light	7.838473333333334	7.512460000000001	8.03018
12 h after light	7.610246666666666	7.56117	7.706339999999999
4 h after dark	7.8299433333333335	7.5454	7.99282
8 h after dark	7.80591	7.595280000000001	8.14664
12 h after dark	7.52158	7.4405	7.632689999999999