condition mean min max ZT0-3 200.4 200.4 200.4 ZT4-7 265.2 265.2 265.2 ZT8-11 297.0 297.0 297.0 ZT12-15 224.29999999999998 224.29999999999998 224.29999999999998 ZT16-19 98.25 98.25 98.25 ZT20-23 167.4 167.4 167.4