condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0122534815 0.0 0.024506963 ZT8-11 0.01921038725 0.015571903 0.0228488715 ZT12-15 0.020893497500000004 0.0099680705 0.031818924500000005 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0