condition	mean	min	max
4 h after light	15.390706000000002	12.150829	18.630583
8 h after light	14.727069499999999	13.598709	15.85543
12 h after light	14.265664000000001	12.582037	15.949291
4 h after dark	19.8109265	19.602787	20.019066
8 h after dark	16.049371999999998	16.036502	16.062242
12 h after dark	14.461039	14.461039	14.461039