condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 2.33238 2.33238 2.33238 ZT12-15 2.23805925 0.4660835 4.010035 ZT16-19 1.30537 1.30537 1.30537 ZT20-23 0.0 0.0 0.0