condition mean min max ZT0-3 39.247237459999994 19.56152873 58.932946189999996 ZT4-7 112.9008214 111.90996945 113.89167334999999 ZT8-11 116.0198674075 112.4876263 119.552108515 ZT12-15 51.0215181875 39.854583765 62.18845261 ZT16-19 37.8100570375 33.540709405 42.07940467 ZT20-23 27.6255576525 23.859383525 31.39173178