condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.3002525 0.3002525 0.3002525 ZT8-11 0.0204399 0.0204399 0.0204399 ZT12-15 0.0 0.0 0.0 ZT16-19 0.039932 0.039932 0.039932 ZT20-23 0.048223999999999996 0.048223999999999996 0.048223999999999996