condition mean min max ZT0-3 0.01817445975 0.0 0.0363489195 ZT4-7 0.0 0.0 0.0 ZT8-11 0.052975396 0.0 0.105950792 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.019535392 0.017668348 0.021402436