condition mean min max ZT0-3 0.37242565475 0.28518746300000003 0.4596638465 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 0.0 0.0 0.0 ZT20-23 0.1492470486666667 0.0 0.2984940973333334