condition mean min max ZT0-3 0.84063 0.0 1.68126 ZT4-7 1.71308 1.71308 1.71308 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 1.65583 1.65583 1.65583