condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.25374 0.25374 0.25374 ZT12-15 0.13919 0.13919 0.13919 ZT16-19 0.3466455 0.3466455 0.3466455 ZT20-23 0.0 0.0 0.0