condition mean min max ZT0-3 53.485721747499994 43.1569168 63.814526695 ZT4-7 43.319055586666664 41.0198803 45.61823087333333 ZT8-11 42.45662580166667 37.968007013333334 46.94524459 ZT12-15 58.69556179 54.18284766 63.20827592 ZT16-19 74.480325335 70.79429443333333 78.16635623666667 ZT20-23 80.8671217 76.81156082 84.92268258