condition mean min max ZT0-3 90.911399905 78.99436381 102.828436 ZT4-7 11.896115932999997 6.357112561999999 17.435119303999997 ZT8-11 10.323303280000001 6.6160638485 14.0305427115 ZT12-15 11.610554352500001 10.580830454 12.640278251000002 ZT16-19 16.8091167325 14.3818208 19.236412665 ZT20-23 23.8501182575 21.86859235 25.831644165