Starting on CalCOFI 1504NH, individual data codes will populate the sta.csvs. Modifications to CESL, DECODR, seaPt, and gTool will use the individual nutrient data codes: P4DC = PO4, SIDC = SIL, N2DC = NO2DC, N3DC = NO3DC. Data codes are : "0" for good bottle data; "4" to zero the data; "9" to omit the data.