condition mean min max ZT0-3 0.037149485 0.037149485 0.037149485 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.00486708 0.00486708 0.00486708 ZT20-23 0.0268293 0.0268293 0.0268293