condition	mean	min	max
4 h after light	18.769430999999997	17.512178	20.026684
8 h after light	20.7642645	20.188274	21.340255
12 h after light	19.5669255	19.114785	20.019066
4 h after dark	19.015469500000002	18.463464	19.567475
8 h after dark	19.311922000000003	18.953541	19.670303
12 h after dark	19.670303	19.670303	19.670303