condition mean min max ZT0-3 945.1 945.1 945.1 ZT4-7 434.2 434.2 434.2 ZT8-11 372.0 372.0 372.0 ZT12-15 168.64999999999998 168.64999999999998 168.64999999999998 ZT16-19 135.5 135.5 135.5 ZT20-23 371.35 371.35 371.35