condition mean min max ZT0-3 947.1 947.1 947.1 ZT4-7 824.3 824.3 824.3 ZT8-11 848.85 848.85 848.85 ZT12-15 758.05 758.05 758.05 ZT16-19 982.7 982.7 982.7 ZT20-23 998.0500000000001 998.0500000000001 998.0500000000001