Maucha diagram

It conveys similar ionic information to the Piper diagram, though in a more compact format that is suitable as a map symbol or for showing changes with time.

The Maucha diagram is a special case of the Radar chart and overcomes some of the limitations of the Pie chart by having equal angles for all variables and consistently showing each variable in the same position.

The star shape comprises eight kite-shaped polygons, the area of each of which is proportional to the concentration of an ion in milliequivalents per litre.

The anions carbonate, bicarbonate, chloride and sulphate are on the left, while the cations potassium, sodium, calcium and magnesium are on the right.

[5] Broch and Yake modified Maucha's original fixed-size diagram by scaling for concentration.