condition mean min max ZT0-3 112.888838 112.888838 112.888838 ZT4-7 119.96313049999999 119.96313049999999 119.96313049999999 ZT8-11 204.9249595 204.9249595 204.9249595 ZT12-15 211.3957905 211.3957905 211.3957905 ZT16-19 172.67366049999998 172.67366049999998 172.67366049999998 ZT20-23 144.50848 144.50848 144.50848