condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0405565 0.0405565 0.0405565 ZT8-11 0.040313 0.040313 0.040313 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.053244999999999994 0.053244999999999994 0.053244999999999994