condition mean min max ZT0-3 0.3396575375 0.0 0.679315075 ZT4-7 0.09520502916666666 0.0 0.19041005833333333 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0