condition mean min max ZT0-3 33.8484893125 26.30469778 41.392280845 ZT4-7 17.2581637755 8.978868354 25.537459197 ZT8-11 37.72166651 19.590186995 55.853146025 ZT12-15 197.89436437749998 179.49750640499997 216.29122235000003 ZT16-19 203.543956275 176.324634 230.76327855 ZT20-23 114.018091125 109.05581774999999 118.98036450000001