condition mean min max ZT0-3 724.56673 724.56673 724.56673 ZT4-7 768.347212 768.347212 768.347212 ZT8-11 580.204412 580.204412 580.204412 ZT12-15 824.4873195 824.4873195 824.4873195 ZT16-19 584.5530140000001 584.5530140000001 584.5530140000001 ZT20-23 352.704315 352.704315 352.704315