condition mean min max ZT0-3 42.504634977500004 37.881713325 47.12755663 ZT4-7 37.76815232 29.794997165 45.741307475 ZT8-11 79.54825165 59.03572587000001 100.06077743 ZT12-15 140.2444439 129.0567639 151.4321239 ZT16-19 142.06599690000002 136.2634812 147.8685126 ZT20-23 169.102443225 168.2982991 169.90658735