condition	mean	min	max
4 h after light	6.64123	6.45147	6.783460000000001
8 h after light	6.64429	6.5686	6.7320199999999994
12 h after light	6.29973	6.11598	6.4238599999999995
4 h after dark	6.895523333333333	6.71926	7.118989999999999
8 h after dark	6.916406666666666	6.789039999999999	7.13063
12 h after dark	7.324723333333333	6.96453	7.690519999999999