condition mean min max ZT0-3 926.35 926.35 926.35 ZT4-7 741.5 741.5 741.5 ZT8-11 909.0 909.0 909.0 ZT12-15 1201.5 1201.5 1201.5 ZT16-19 1206.9 1206.9 1206.9 ZT20-23 1354.9499999999998 1354.9499999999998 1354.9499999999998