condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.08146996983333332 0.029652898666666663 0.133287041 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