condition mean min max ZT0-3 189.2763833333333 78.72815 250.891 ZT4-7 119.6695 119.6695 119.6695 ZT8-11 68.39875 68.39875 68.39875 ZT12-15 98.1665 71.9485 124.3845 ZT16-19 164.17849999999999 164.17849999999999 164.17849999999999 ZT20-23 189.59550000000002 189.59550000000002 189.59550000000002