E1 TRANSPARENCY [m], 1970 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0.06 0.08 0.04 0.04 0.07 0.07 0.08 0.07 0.07 0.06 0.09 0.11 Source:McLachlan, A. J. (1979) The aquatic environment, chemical and physical characteristics of Lake Chilwa. "Lake Chilwa" (ed. Kalk, M., McLachlan, A. J. & Howard-Williams, C.), pp. 59-78.