condition mean min max ZT0-3 37.002715412499995 34.48838154 39.517049285 ZT4-7 25.769745715 24.032020279999998 27.50747115 ZT8-11 35.7090381325 27.083631465 44.3344448 ZT12-15 32.6225779775 30.404141019999997 34.841014935000004 ZT16-19 38.2973568875 37.269331645 39.32538213 ZT20-23 34.38539840749999 33.580798415 35.18999839999999