Maps

Nitrate

Jan Feb Mar Apr May Jun
Nitrate 1981-1 Nitrate 1981-2 Nitrate 1981-3 Nitrate 1981-4 Nitrate 1981-5 Nitrate 1981-6
 
July Aug Sep Oct Nov Dec
Nitrate 1981-7 Nitrate 1981-8 Nitrate 1981-9 Nitrate 1981-10 Nitrate 1981-11 Nitrate 1981-12

Phosphate

Jan Feb Mar Apr May Jun
Phosphate 1981-1 Phosphate 1981-2 Phosphate 1981-3 Phosphate 1981-4 Phosphate 1981-5 Phosphate 1981-6
 
July Aug Sep Oct Nov Dec
Phosphate 1981-7 Phosphate 1981-8 Phosphate 1981-9 Phosphate 1981-10 Phosphate 1981-11 Phosphate 1981-12

Silicate

Jan Feb Mar Apr May Jun
Silicate 1981-1 Silicate 1981-2 Silicate 1981-3 Silicate 1981-4 Silicate 1981-5 Silicate 1981-6
 
July Aug Sep Oct Nov Dec
Silicate 1981-7 Silicate 1981-8 Silicate 1981-9 Silicate 1981-10 Silicate 1981-11 Silicate 1981-12

DIC

Jan Feb Mar Apr May Jun
DIC 1981-1 DIC 1981-2 DIC 1981-3 DIC 1981-4 DIC 1981-5 DIC 1981-6
 
July Aug Sep Oct Nov Dec
DIC 1981-7 DIC 1981-8 DIC 1981-9 DIC 1981-10 DIC 1981-11 DIC 1981-12