condition mean min max ZT0-3 209.45 209.45 209.45 ZT4-7 325.8 325.8 325.8 ZT8-11 223.4 223.4 223.4 ZT12-15 269.0 269.0 269.0 ZT16-19 328.8 328.8 328.8 ZT20-23 247.89999999999998 247.89999999999998 247.89999999999998