condition mean min max ZT0-3 190.2 190.2 190.2 ZT4-7 101.6 101.6 101.6 ZT8-11 156.65 156.65 156.65 ZT12-15 273.85 273.85 273.85 ZT16-19 277.25 277.25 277.25 ZT20-23 209.55 209.55 209.55