condition mean min max ZT0-3 0.08378431666666666 0.05659825 0.0988215 ZT4-7 0.14558355 0.14558355 0.14558355 ZT8-11 0.417329 0.417329 0.417329 ZT12-15 1.24654 1.005585 1.487495 ZT16-19 0.703631 0.703631 0.703631 ZT20-23 0.3030075 0.3030075 0.3030075