condition	mean	min	max
4 h after light	7.77309	7.67342	7.906210000000001
8 h after light	7.626953333333334	7.369219999999999	7.865530000000001
12 h after light	7.32666	7.277839999999999	7.362080000000001
4 h after dark	7.744683333333334	7.5926	7.89875
8 h after dark	7.825563333333333	7.737089999999999	7.8827300000000005
12 h after dark	7.638393333333333	7.55823	7.68728