condition mean min max ZT0-3 103.3767863125 55.789271400000004 150.96430122499999 ZT4-7 157.3508629 147.53370085 167.16802495000002 ZT8-11 81.2558934125 58.759335435 103.75245139 ZT12-15 36.52686084 34.68008364 38.37363804 ZT16-19 60.779442450000005 58.85443053 62.70445437 ZT20-23 56.8558473 50.450951505 63.260743095