condition mean min max ZT0-3 0.6973388333333334 0.451752 1.0585985 ZT4-7 0.0 0.0 0.0 ZT8-11 1.15168 1.15168 1.15168 ZT12-15 0.37092500000000006 0.2804245 0.46142550000000004 ZT16-19 0.14395 0.14395 0.14395 ZT20-23 0.3117085 0.3117085 0.3117085