condition mean min max ZT0-3 144.26444988333333 130.6408119 157.88808786666667 ZT4-7 209.42130778333336 188.2917422666667 230.5508733 ZT8-11 168.97773285 166.53898856666666 171.41647713333333 ZT12-15 145.1448449 130.8955362 159.3941536 ZT16-19 120.89569535000001 119.61251130000001 122.1788794 ZT20-23 119.55129005 115.1680175 123.93456259999999