condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.00726455 0.0 0.0145291 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0