E7 NITROGEN CONCENTRATION

NO3-N [mg l-1]*, 1970
  Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
 0.03     -      -      -      -      -      -    0.04   0.11   0.03   0.13   0.08

* Converted from the original determination of NO3-.
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.