condition mean min max ZT0-3 0.021133125 0.0 0.04226625 ZT4-7 0.3085905 0.3085905 0.3085905 ZT8-11 0.0428046 0.0428046 0.0428046 ZT12-15 0 0 0 ZT16-19 0.12764465 0.12764465 0.12764465 ZT20-23 0.0 0.0 0.0