condition mean min max ZT0-3 0.70223 0.70223 0.70223 ZT4-7 0.5241715 0.5241715 0.5241715 ZT8-11 0.9344425000000001 0.9344425000000001 0.9344425000000001 ZT12-15 0.7475265 0.7475265 0.7475265 ZT16-19 1.576645 1.576645 1.576645 ZT20-23 0.9177115 0.9177115 0.9177115