condition mean min max ZT0-3 35.00475 31.8949 38.1146 ZT4-7 10.19647 10.19647 10.19647 ZT8-11 6.375735000000001 6.375735000000001 6.375735000000001 ZT12-15 0 0 0 ZT16-19 13.44653 13.44653 13.44653 ZT20-23 19.1229 19.1229 19.1229