condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 1.107275 1.107275 1.107275 ZT12-15 2.870225 2.870225 2.870225 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0