condition mean min max ZT0-3 111.39887799750001 82.610677995 140.187078 ZT4-7 40.26511753 34.94216447 45.58807059 ZT8-11 54.7491581475 49.49664136 60.001674935 ZT12-15 38.7781676275 31.74211641 45.814218845 ZT16-19 39.905817907499994 34.863006725 44.94862909 ZT20-23 63.05828248249999 59.590571225 66.52599373999999