Maps

Nitrate

Jan Feb Mar Apr May Jun
Nutrient 1968-1 Nitrate 1968-2 Nitrate 1968-3 Nitrate 1968-4 Nitrate 1968-5 Nitrate 1968-6
 
July Aug Sep Oct Nov Dec
Nitrate 1968-7 Nitrate 1968-8 Nitrate 1968-9 Nitrate 1968-10 Nitrate 1968-11 Nitrate 1968-12

Phosphate

Jan Feb Mar Apr May Jun
Phosphate 1968-1 Phosphate 1968-2 Phosphate 1968-3 Phosphate 1968-4 Phosphate 1968-5 Phosphate 1968-6
 
July Aug Sep Oct Nov Dec
Phosphate 1968-7 Phosphate 1968-8 Phosphate 1968-9 Phosphate 1968-10 Phosphate 1968-11 Phosphate 1968-12

Silicate

Jan Feb Mar Apr May Jun
Silicate 1968-1 Silicate 1968-2 Silicate 1968-3 Silicate 1968-4 Silicate 1968-5 Silicate 1968-6
 
July Aug Sep Oct Nov Dec
Silicate 1968-7 Silicate 1968-8 Silicate 1968-9 Silicate 1968-10 Silicate 1968-11 Silicate 1968-12