The value of the variable occurring with the greatest frequency in the series of observations. A bimodal distribution is one which contains two maxima. The use of mode when reporting results of chemical analysis is generally not recommended.
PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2202 (https://doi.org/10.1351/pac199062112167)
PAC, 1994, 66, 595. 'Nomenclature for the presentation of results of chemical analysis (IUPAC Recommendations 1994)' on page 603 (https://doi.org/10.1351/pac199466030595)