condition mean min max ZT0-3 1.1749475 1.1749475 1.1749475 ZT4-7 0.50901 0.50901 0.50901 ZT8-11 0.0 0.0 0.0 ZT12-15 0.67331 0.67331 0.67331 ZT16-19 0.450084 0.450084 0.450084 ZT20-23 0.8854265 0.8854265 0.8854265