condition mean min max ZT0-3 1.2265415 1.2265415 1.2265415 ZT4-7 1.34369 1.34369 1.34369 ZT8-11 4.05162 4.05162 4.05162 ZT12-15 2.739485 2.739485 2.739485 ZT16-19 1.43234 1.43234 1.43234 ZT20-23 1.48986 1.48986 1.48986