condition mean min max ZT0-3 434.4 434.4 434.4 ZT4-7 2480.7 2480.7 2480.7 ZT8-11 2889.3 2889.3 2889.3 ZT12-15 2178.75 2178.75 2178.75 ZT16-19 940.1500000000001 940.1500000000001 940.1500000000001 ZT20-23 442.55 442.55 442.55