condition mean min max ZT0-3 145.85000000000002 145.85000000000002 145.85000000000002 ZT4-7 101.5 101.5 101.5 ZT8-11 109.85000000000001 109.85000000000001 109.85000000000001 ZT12-15 225.7 225.7 225.7 ZT16-19 170.25 170.25 170.25 ZT20-23 193.39999999999998 193.39999999999998 193.39999999999998