condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 2.698635 2.698635 2.698635 ZT8-11 1.093215 1.093215 1.093215 ZT12-15 1.771025 1.771025 1.771025 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0