condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0046738 0.0 0.0093476 ZT16-19 0.00683155 0.0 0.0136631 ZT20-23 0 0 0