condition mean min max ZT0-3 10.4754 10.4754 10.4754 ZT4-7 13.9887075 13.9887075 13.9887075 ZT8-11 11.425726000000001 11.425726000000001 11.425726000000001 ZT12-15 11.2981765 11.2981765 11.2981765 ZT16-19 11.9455385 11.9455385 11.9455385 ZT20-23 10.1826215 10.1826215 10.1826215