ajout de NA (Not Available pour capteur externe

@tsg_nc/tsg_ncattr.csv

@@ -8,7 +8,7 @@ integer;char;char;char;char;char;integer;integer;integer;char;char;
 3;SHIP_MMSI;SHIP MMSI:;;edit;;;;;right;Ship MMSI (ASN) number;
 4;TSG_TYPE;TSG TYPE:;;popupmenu;SBE21|SBE45|UNKNO;1;.1;.02;right;Thermosalinograph model number;
 5;TSG_NUMBER;TSG NUMBER:;;edit;;;;;right;TSG serial number;
-6;TINT_TYPE;TINT TYPE:;;popupmenu;SBE38|SBE3S|UNKNO;1;.1;.02;right;External sea surface temperature sensor;
+6;TINT_TYPE;TINT TYPE:;;popupmenu;SBE38|SBE3S|UNKNO|NA;1;.1;.02;right;External sea surface temperature sensor;
 7;TINT_NUMBER;TINT NUMBER:;;edit;;;;;right;External temperature sensor serial number;
 8;DATA_TYPE;DATA TYPE:;;edit;;;;;right;Describe data type contained in file, eg: Thermosalinometer data;
 9;DATA_MODE;DATA MODE:;;popupmenu;Delayed mode data|Real time data;1;0.1;0.02;right;Indicate if the file contains real time or delayed mode data;