condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0411313 0.0411313 0.0411313 ZT12-15 0.02057965 0.0 0.0411593 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0