Patterns for charts are implemented here. People who have color perception impairments often have trouble understanding the data from the graphs. This solution should help these people.

There are used 50 different types of patterns, different colors, and enlarged graph legend icons.

The black and white version can be used for black and white printing. That reduces the consumption of paints and the burden on nature.

Also, the distances between the elements of the graph legends will be increased to improve perception.