condition mean min max ZT0-3 0.9568099999999999 0.8250395 1.0885805 ZT4-7 3.507375 3.507375 3.507375 ZT8-11 28.789099999999998 28.789099999999998 28.789099999999998 ZT12-15 0 0 0 ZT16-19 5.655195 5.655195 5.655195 ZT20-23 1.359025 1.359025 1.359025