condition mean min max ZT0-3 0.07448065000000001 0.0488248 0.1001365 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0496381 0.0496381 0.0496381