condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.07780761783333334 0.0 0.15561523566666668 ZT12-15 0.08949339483333334 0.0 0.17898678966666667 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0