condition mean min max ZT0-3 10.241064999999999 9.74643 10.7357 ZT4-7 10.898399999999999 10.898399999999999 10.898399999999999 ZT8-11 9.802064999999999 9.802064999999999 9.802064999999999 ZT12-15 0 0 0 ZT16-19 11.70156 11.70156 11.70156 ZT20-23 12.90785 12.90785 12.90785