condition mean min max ZT0-3 215.669 215.669 215.669 ZT4-7 200.2865 200.2865 200.2865 ZT8-11 220.2515 220.2515 220.2515 ZT12-15 162.313 162.313 162.313 ZT16-19 239.785 239.785 239.785 ZT20-23 205.9435 205.9435 205.9435