condition mean min max ZT0-3 0.009713716666666667 0.0 0.02914115 ZT4-7 0.0 0.0 0.0 ZT8-11 0.056173 0.056173 0.056173 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0