condition mean min max ZT0-3 0.33397325 0.224991 0.44295550000000006 ZT4-7 0.398913 0.398913 0.398913 ZT8-11 0.5521480000000001 0.5521480000000001 0.5521480000000001 ZT12-15 0 0 0 ZT16-19 0.5406785000000001 0.5406785000000001 0.5406785000000001 ZT20-23 0.5192209999999999 0.5192209999999999 0.5192209999999999