condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.381856 0.381856 0.381856 ZT12-15 0.2566185 0.2566185 0.2566185 ZT16-19 0.06436555 0.06436555 0.06436555 ZT20-23 0.02126305 0.02126305 0.02126305