condition mean min max ZT0-3 84.1569 77.27335 91.04044999999999 ZT4-7 32.59675 32.59675 32.59675 ZT8-11 5.540414999999999 5.540414999999999 5.540414999999999 ZT12-15 0 0 0 ZT16-19 0.672364 0.672364 0.672364 ZT20-23 24.3233 24.3233 24.3233