condition mean min max ZT0-3 40.63666666666667 16.77935 83.3861 ZT4-7 38.33025 38.33025 38.33025 ZT8-11 44.0167 44.0167 44.0167 ZT12-15 57.809225 30.5994 85.01905 ZT16-19 30.240250000000003 30.240250000000003 30.240250000000003 ZT20-23 34.6652 34.6652 34.6652