condition mean min max ZT0-3 193.86159237500001 179.02985755000003 208.6933272 ZT4-7 137.48135100000002 117.64308635 157.31961565 ZT8-11 197.80193609999998 167.9210341 227.68283809999997 ZT12-15 155.86436845 125.72646035 186.00227655 ZT16-19 166.653110025 165.33192689999998 167.97429315 ZT20-23 162.68925862499998 158.10085245 167.2776648