condition mean min max ZT0-3 202.1 202.1 202.1 ZT4-7 129.0 129.0 129.0 ZT8-11 191.70000000000002 191.70000000000002 191.70000000000002 ZT12-15 115.8 115.8 115.8 ZT16-19 36.75 36.75 36.75 ZT20-23 121.2 121.2 121.2