condition mean min max ZT0-3 0.7347545 0.688725 0.7807839999999999 ZT4-7 0.6976279999999999 0.6976279999999999 0.6976279999999999 ZT8-11 0.6889495 0.6889495 0.6889495 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.4863365 0.4863365 0.4863365