condition mean min max ZT0-3 10.224203254499999 6.578239179 13.87016733 ZT4-7 13.1765885675 11.576330585000001 14.776846549999998 ZT8-11 9.508671328250001 9.3057294635 9.711613193000002 ZT12-15 4.792708175 3.3375336305000003 6.2478827195 ZT16-19 5.2031043732499995 5.1519876345 5.254221112 ZT20-23 6.374815480500001 5.224313793 7.525317168