condition mean min max ZT0-3 0.01817445975 0.0 0.0363489195 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0109758845 0.0 0.021951769 ZT12-15 0.010429430333333335 0.0 0.02085886066666667 ZT16-19 0.0 0.0 0.0 ZT20-23 0.010701218 0.0 0.021402436