E4 DO [mg l-1], 1970

        Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Surfac  4.2    5.6    6.4    7.4    7.1    7.8    10     8.5    8.3    7.7    7.6     -

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.