condition mean min max ZT0-3 175.693595 175.693595 175.693595 ZT4-7 119.36654 119.36654 119.36654 ZT8-11 94.94999 94.94999 94.94999 ZT12-15 90.0322715 90.0322715 90.0322715 ZT16-19 106.6239395 106.6239395 106.6239395 ZT20-23 133.4718315 133.4718315 133.4718315