condition mean min max ZT0-3 502.45 502.45 502.45 ZT4-7 499.1 499.1 499.1 ZT8-11 439.65 439.65 439.65 ZT12-15 282.05 282.05 282.05 ZT16-19 174.0 174.0 174.0 ZT20-23 232.14999999999998 232.14999999999998 232.14999999999998