condition mean min max ZT0-3 0.20779375 0.1383225 0.277265 ZT4-7 0.4233905 0.4233905 0.4233905 ZT8-11 0.8340799999999999 0.8340799999999999 0.8340799999999999 ZT12-15 0 0 0 ZT16-19 0.4097125 0.4097125 0.4097125 ZT20-23 0.275127 0.275127 0.275127