condition mean min max ZT0-3 33.93885862083333 32.317965605 35.55975163666667 ZT4-7 40.704354218333336 37.97377468333333 43.43493375333333 ZT8-11 37.019922885 35.12044469 38.91940108 ZT12-15 38.114095655 37.434188649999996 38.79400266 ZT16-19 38.18674225 36.61953829 39.75394621 ZT20-23 38.253656363333334 37.167472493333335 39.339840233333334