E7 NITROGEN CONCENTRATION

Total-N [mg l-1]
Mean of 4 sampling stations, 1981-1990
Depth [m]   Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
 Surface    7.2    7.4    5.8    5.4    5.0    4.4    4.7    4.5    4.9    4.3    5.8    5.7

NH4-N [mg l-1]
Depth [m]   Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
 Surface   0.15   0.16   0.15   0.14   0.14   0.11   0.23   0.25   0.12   0.10   0.10   0.11

NO2-N + NO3-N [mg l-1]
Mean of 4 sampling stations, 1981-1990
Depth [m]   Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
 Surface   0.06   0.07   0.03   0.06   0.06   0.05   0.77   1.10   0.84   0.22   0.12   0.15