In column or bar charts, if multiple columns or bars are the same color or have the same picture (in the case of a pictograph), they comprise a single data series.
N'ihe banyere kọlụm ma ọ bụ sụgharịrị chaatị, ma ọ bụrụ na ọtụtụ ogidi ma ọ bụ ihe ntụchi bụ otu agba, ma ọ bụ nwee otu foto ahụ n'ihe gbasara eserese , ha nwere otu usoro data.