condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0116521 0.0116521 0.0116521 ZT8-11 0.0 0.0 0.0 ZT12-15 0.006545125 0.0 0.01309025 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0