diff --git a/openghg_defs/data/site_info.json b/openghg_defs/data/site_info.json
index 40ca51d..ead0a12 100644
--- a/openghg_defs/data/site_info.json
+++ b/openghg_defs/data/site_info.json
@@ -3166,6 +3166,17 @@
       "longitude": 126.12
     }
   },
+  "TBI": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 185.0,
+      "latitude": 53.23,
+      "long_name": "bialystok01, Bialystok, Poland",
+      "longitude": 23.02,
+      "platform": "ground_based_column"
+    }
+  },
   "TBP": {
     "NOAA": {
       "height_station_masl": 200.0,
@@ -3174,6 +3185,94 @@
       "longitude": -69.2918
     }
   },
+  "TBR": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 30.0,
+      "latitude": 53.1,
+      "long_name": "bremen01, Bremen, Germany",
+      "longitude": 8.85,
+      "platform": "ground_based_column"
+    }
+  },
+  "TBU": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 40.0,
+      "latitude": 18.53,
+      "long_name": "burgos01, Burgos, Ilocos Norte, Philippines",
+      "longitude": 120.65,
+      "platform": "ground_based_column"
+    }
+  },
+  "TCI": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 240.0,
+      "latitude": 34.14,
+      "long_name": "pasadena01, California Institute of Technology, Pasadena, California, USA",
+      "longitude": -118.13,
+      "platform": "ground_based_column"
+    }
+  },
+  "TDB": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": [30.0, 40.0],
+      "latitude": -12.4471,
+      "long_name": "darwin01, Darwin, Australia",
+      "longitude": [130.89, 130.93],
+      "platform": "ground_based_column"
+    }
+  },
+  "TDF": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 700.0,
+      "latitude": 34.96,
+      "long_name": "edwards01, Armstrong Flight Research Center, Edwards, CA, USA",
+      "longitude": -117.88,
+      "platform": "ground_based_column"
+    }
+  },
+  "TET": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": [495.0, 502.0],
+      "latitude": [54.35, 54.36],
+      "long_name": "easttroutlake01, East Trout Lake, Canada",
+      "longitude": -104.99,
+      "platform": "ground_based_column"
+    }
+  },
+  "TEU": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 610.0,
+      "latitude": 80.05,
+      "long_name": "eureka01, Eureka, Canada",
+      "longitude": -86.42,
+      "platform": "ground_based_column"
+    }
+  },
+  "TFC": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 1643.0,
+      "latitude": 36.8,
+      "long_name": "fourcorners01, Four Corners, NM, USA",
+      "longitude": -108.48,
+      "platform": "ground_based_column"
+    }
+  },
   "TGC": {
     "NOAA": {
       "height_station_masl": 0.0,
@@ -3182,6 +3281,17 @@
       "longitude": -96.86
     }
   },
+  "TGM": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 745.0,
+      "latitude": 47.48,
+      "long_name": "garmisch01, Garmisch, Germany",
+      "longitude": 11.06,
+      "platform": "ground_based_column"
+    }
+  },
   "THD": {
     "AGAGE": {
       "height": ["10m"],
@@ -3208,6 +3318,39 @@
       "longitude": -124.151
     }
   },
+  "THF": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 40.0,
+      "latitude": [31.9, 31.91],
+      "long_name": "hefei01, Hefei, China",
+      "longitude": 117.17,
+      "platform": "ground_based_column"
+    }
+  },
+  "THW": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": [129.0, 142.0],
+      "latitude": 51.57,
+      "long_name": "harwell01, Space Sciecne and Technology Department, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0QX, UK",
+      "longitude": -1.32,
+      "platform": "ground_based_column"
+    }
+  },
+  "TIF": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 270.0,
+      "latitude": 39.86,
+      "long_name": "indianapolis01, Indianapolis, Indiana, USA",
+      "longitude": -86.0,
+      "platform": "ground_based_column"
+    }
+  },
   "TIK": {
     "NOAA": {
       "height_station_masl": 19.0,
@@ -3226,6 +3369,105 @@
       "longitude": 0.32127
     }
   },
+  "TIZ": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 2370.0,
+      "latitude": 28.31,
+      "long_name": "izana01, Izana, Tenerife, Spain",
+      "longitude": -16.5,
+      "platform": "ground_based_column"
+    }
+  },
+  "TJC": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": [210.0, 390.0],
+      "latitude": [34.13, 34.2],
+      "long_name": "jpl01, Jet Propulsion Laboratory, Pasadena, California, USA",
+      "longitude": -118.1798,
+      "platform": "ground_based_column"
+    }
+  },
+  "TJF": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 390.0,
+      "latitude": 34.2,
+      "long_name": "jpl02, Jet Propulsion Laboratory, Pasadena, California, USA",
+      "longitude": -118.18,
+      "platform": "ground_based_column"
+    }
+  },
+  "TJS": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 9.0,
+      "latitude": 33.24,
+      "long_name": "saga01, Saga, Japan",
+      "longitude": 130.29,
+      "platform": "ground_based_column"
+    }
+  },
+  "TKA": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 110.0,
+      "latitude": 49.1,
+      "long_name": "karlsruhe01, Karlsruhe, Germany",
+      "longitude": 8.44,
+      "platform": "ground_based_column"
+    }
+  },
+  "TLH": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 370.0,
+      "latitude": -45.04,
+      "long_name": "lauder01, Lauder, New Zealand, 120HR",
+      "longitude": 169.68,
+      "platform": "ground_based_column"
+    }
+  },
+  "TLL": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 370.0,
+      "latitude": -45.04,
+      "long_name": "lauder02, Lauder, New Zealand, 125HR",
+      "longitude": 169.68,
+      "platform": "ground_based_column"
+    }
+  },
+  "TLR": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 370.0,
+      "latitude": -45.04,
+      "long_name": "lauder03, Lauder, New Zealand, 125HR",
+      "longitude": 169.68,
+      "platform": "ground_based_column"
+    }
+  },
+  "TMA": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 50.0,
+      "latitude": -3.21,
+      "long_name": "manaus01, Manaus, Brazil",
+      "longitude": -60.6,
+      "platform": "ground_based_column"
+    }
+  },
   "TMB": {
     "CRANFIELD": {
       "height": ["5m"],
@@ -3255,6 +3497,28 @@
       "longitude": -77.4881
     }
   },
+  "TNI": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 185.0,
+      "latitude": 35.14,
+      "long_name": "nicosia01, Nicosia (CY), The Cyprus Institute",
+      "longitude": 33.38,
+      "platform": "ground_based_column"
+    }
+  },
+  "TNY": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 20.0,
+      "latitude": 78.92,
+      "long_name": "nyalesund01, Ny-\u00c5lesund, Svalbard, Norway",
+      "longitude": 11.92,
+      "platform": "ground_based_column"
+    }
+  },
   "TOB": {
     "AGAGE": {
       "height": ["12m"],
@@ -3265,6 +3529,17 @@
       "longitude": 8.44639
     }
   },
+  "TOC": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 320.0,
+      "latitude": 36.6,
+      "long_name": "lamont01, Lamont, Oklahoma, USA",
+      "longitude": -97.49,
+      "platform": "ground_based_column"
+    }
+  },
   "TOH": {
     "ICOS": {
       "latitude": 51.8088,
@@ -3283,6 +3558,28 @@
       "height_name": ["110magl"]
     }
   },
+  "TOR": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 130.0,
+      "latitude": 47.96,
+      "long_name": "orleans01, Orleans, France",
+      "longitude": 2.11,
+      "platform": "ground_based_column"
+    }
+  },
+  "TPA": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 476.0,
+      "latitude": 45.94,
+      "long_name": "parkfalls01, Park Falls, Wisconsin, USA",
+      "longitude": -90.27,
+      "platform": "ground_based_column"
+    }
+  },
   "TPD": {
     "EC": {
       "height": ["35m"],
@@ -3309,6 +3606,39 @@
       "longitude": 114.3711
     }
   },
+  "TPR": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 60.0,
+      "latitude": 48.85,
+      "long_name": "paris01, LERMA, Sorbonne Universit\u00e9, Campus Pierre et Marie Curie, 4 Place Jussieu, Paris 05, France",
+      "longitude": 2.36,
+      "platform": "ground_based_column"
+    }
+  },
+  "TRA": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 85.0,
+      "latitude": -20.9,
+      "long_name": "reunion01, Reunion Island (Ile de La Reunion), France",
+      "longitude": 55.48,
+      "platform": "ground_based_column"
+    }
+  },
+  "TRJ": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 380.0,
+      "latitude": 43.46,
+      "long_name": "rikubetsu01, Rikubetsu, Hokkaido, Japan",
+      "longitude": 143.77,
+      "platform": "ground_based_column"
+    }
+  },
   "TRN": {
     "ICOS": {
       "height": ["180m"],
@@ -3343,6 +3673,17 @@
       "platform": "satellite"
     }
   },
+  "TSO": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 188.0,
+      "latitude": 67.37,
+      "long_name": "sodankyla01, Sodankyl\u00e4, Finland",
+      "longitude": 26.63,
+      "platform": "ground_based_column"
+    }
+  },
   "TTA": {
     "DECC": {
       "height": ["222m"],
@@ -3361,6 +3702,39 @@
       "longitude": -2.98604
     }
   },
+  "TTK": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 31.0,
+      "latitude": 36.05,
+      "long_name": "tsukuba02, Tsukuba, Ibaraki, Japan, 125HR",
+      "longitude": 140.12,
+      "platform": "ground_based_column"
+    }
+  },
+  "TWG": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": [30.0, 40.0],
+      "latitude": -34.41,
+      "long_name": "wollongong01, Wollongong, Australia",
+      "longitude": 150.88,
+      "platform": "ground_based_column"
+    }
+  },
+  "TXH": {
+    "TCCON": {
+      "height": "column",
+      "height_name": "column",
+      "height_station_masl": 40.0,
+      "latitude": 39.8,
+      "long_name": "xianghe01, Xianghe, China",
+      "longitude": 116.96,
+      "platform": "ground_based_column"
+    }
+  },
   "ULB": {
     "NOAA": {
       "height_station_masl": 1350.0,