condition mean min max ZT0-3 10.555495 10.555495 10.555495 ZT4-7 14.155392500000001 14.155392500000001 14.155392500000001 ZT8-11 89.3023795 89.3023795 89.3023795 ZT12-15 90.1603045 90.1603045 90.1603045 ZT16-19 80.27620300000001 80.27620300000001 80.27620300000001 ZT20-23 97.4148375 97.4148375 97.4148375