condition mean min max ZT0-3 201.07239 201.07239 201.07239 ZT4-7 181.1485595 181.1485595 181.1485595 ZT8-11 259.849896 259.849896 259.849896 ZT12-15 253.3322785 253.3322785 253.3322785 ZT16-19 246.2966305 246.2966305 246.2966305 ZT20-23 148.5711445 148.5711445 148.5711445