Maps

Nitrate

Jan Feb Mar Apr May Jun
Nitrate 1972-1 Nitrate 1972-2 Nitrate 1972-3 Nitrate 1972-4 Nitrate 1972-5 Nitrate 1972-6
 
July Aug Sep Oct Nov Dec
Nitrate 1972-7 Nitrate 1972-8 Nitrate 1972-9 Nitrate 1972-10 Nitrate 1972-11 Nitrate 1972-12

Phosphate

Jan Feb Mar Apr May Jun
Phosphate 1972-1 Phosphate 1972-2 Phosphate 1972-3 Phosphate 1972-4 Phosphate 1972-5 Phosphate 1972-6
 
July Aug Sep Oct Nov Dec
Phosphate 1972-7 Phosphate 1972-8 Phosphate 1972-9 Phosphate 1972-10 Phosphate 1972-11 Phosphate 1972-12

Silicate

Jan Feb Mar Apr May Jun
Silicate 1972-1 Silicate 1972-2 Silicate 1972-3 Silicate 1972-4 Silicate 1972-5 Silicate 1972-6
 
July Aug Sep Oct Nov Dec
Silicate 1972-7 Silicate 1972-8 Silicate 1972-9 Silicate 1972-10 Silicate 1972-11 Silicate 1972-12

DIC

Jan Feb Mar Apr May Jun
DIC 1972-1 DIC 1972-2 DIC 1972-3 DIC 1972-4 DIC 1972-5 DIC 1972-6
 
July Aug Sep Oct Nov Dec
DIC 1972-7 DIC 1972-8 DIC 1972-9 DIC 1972-10 DIC 1972-11 DIC 1972-12