condition mean min max ZT0-3 38.746917967499996 38.216788715 39.27704722 ZT4-7 38.105777345 38.01455355 38.19700114 ZT8-11 35.496942153333336 33.286785120000005 37.70709918666667 ZT12-15 36.755711270000006 35.2866256 38.224796940000004 ZT16-19 38.35380512666667 37.042543933333334 39.66506632 ZT20-23 40.45698883666667 39.54193114333333 41.37204653