Fig. 1
From: A dataset for aqueous surfactant phase behavior as a function of temperature and composition

Example of a phase diagram where a broad two-phase region below the freezing point of the surfactant, labelled ‘S’ in the original, is disambiguated by adding horizontal lines as indicated. For the rest of the labelling scheme, see Tables 4 and 5. Reproduced with permission from Ref. 33. Copyright 1983 Royal Society of Chemistry.