condition mean min max ZT0-3 9.748054999999999 9.74176 9.754349999999999 ZT4-7 5.06368 5.06368 5.06368 ZT8-11 7.631539999999999 7.631539999999999 7.631539999999999 ZT12-15 0 0 0 ZT16-19 13.96075 13.96075 13.96075 ZT20-23 11.34745 11.34745 11.34745