gTool modules 'makeMAT.m", "makeNutTab.m", "remakeMAT.m" and "makePlotBut.m" have been modified to accept individual nutrient data codes: P4DC for PO4; SIDC for SIL; N2DC for NO2; N3DC for NO3.

gTool's nutrient data table will display the new columns and allow the point-checker to change the data codes for each bottle nutrient. This will replace the combined data codes "NDC".

First cruise that will be processed with the additional data codes will be CalCOFi 1504NH.