condition mean min max ZT0-3 62.866733017499996 58.89294801 66.840518025 ZT4-7 57.211788150000004 49.87226668 64.55130962 ZT8-11 52.429695161666665 52.29254971666666 52.566840606666666 ZT12-15 82.2636167 70.0778626 94.4493708 ZT16-19 125.14656839999999 120.5959393 129.6971975 ZT20-23 122.18863974666665 110.80071042666665 133.57656906666665