add gray part to 5 band covtyp on hhhvvhvv sars

core/rgbnir_definition.json

@@ -466,6 +466,24 @@
             "allowed_value_ranges": [
                 [0, 65535]
             ]
+        },
+        {
+            "definition": "http://www.opengis.net/def/property/OGC/0/Radiance",
+            "description": "Gray Channel",
+            "gdal_interpretation": "GrayBand",
+            "identifier": "gray",
+            "name": "gray",
+            "nil_values": [
+                {
+                    "reason": "http://www.opengis.net/def/nil/OGC/0/unknown",
+                    "value": 0
+                }
+            ],
+            "uom": "W.m-2.Sr-1",
+            "significant_figures": 5,
+            "allowed_value_ranges": [
+                [0, 65535]
+            ]
         }
     ],
     "data_type": "Uint16",