condition mean min max ZT0-3 0.15712271666666666 0.02749365 0.271156 ZT4-7 0.11075660000000001 0.11075660000000001 0.11075660000000001 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01415255 0.0 0.0283051 ZT16-19 0.02642495 0.02642495 0.02642495 ZT20-23 0.0 0.0 0.0