diff --git a/calibration/README.md b/calibration/README.md
index aecf95d73..09a0ec192 100644
--- a/calibration/README.md
+++ b/calibration/README.md
@@ -5,5 +5,22 @@ _Sensor calibration information for scientific equipment installed at collection
 ### FOLDERS ###
 
 * `antennas` - individual GNSS receiver antenna calibration files.
+* `multigas` - gas detection limit information.
 * `fluxgates` - individual Geomagnetic Fluxgate sensor calibration files.
 
+### FILES ###
+
+#### multigas.csv - gas calibration details
+
+|Field|Description|Units|
+|--|--|--|
+|Station|Installed recording station||
+|Location|Installed sensor site location||
+|Gas|Calibration gas||
+|Concentration|Of calibration gas|ppm (parts per million)|
+|Frequency|How often calibration performed, D=daily, W=weekly, 4W=4 weekly, etc||
+|Day Of Week|Calibration day, Monday, Tuesday, etc||
+|Calibration Time|Time calibration performed|HH:MM:SS|
+|Zero Time|Time observation should be zero|HH:MM:SS|
+|Start Date|Of calibrations|YYYY-mm-ddTHH:MM:SSZ|
+|End Date|Of calibrations|YYYY-mm-ddTHH:MM:SSZ|
diff --git a/calibration/multigas.csv b/calibration/multigas.csv
new file mode 100644
index 000000000..5677bc503
--- /dev/null
+++ b/calibration/multigas.csv
@@ -0,0 +1,13 @@
+Station,Location,Gas,Concentration,Frequency,Day Of Week,Calibration Time,Zero Time,Start Date,End Date
+NA002,04,CO2,400,W,Sunday,02:10:00,01:40:00,2024-03-21T02:10:00Z,9999-01-01T00:00:00Z
+NA002,05,SO2,10,W,Sunday,02:50:00,02:10:00,2024-03-21T02:10:00Z,9999-01-01T00:00:00Z
+NA002,06,H2S,25,W,Sunday,02:30:00,02:10:00,2024-03-21T02:10:00Z,9999-01-01T00:00:00Z
+RU001,09,CO2,400,W,Monday,01:40:00,01:10:00,2025-05-13T22:20:00Z,9999-01-01T00:00:00Z
+RU001,10,SO2,10,W,Monday,02:40:00,01:10:00,2025-05-13T22:20:00Z,9999-01-01T00:00:00Z
+RU001,11,H2S,25,W,Monday,02:10:00,01:10:00,2025-05-13T22:20:00Z,9999-01-01T00:00:00Z
+TO003,12,CO2,400,W,Sunday,02:10:00,01:40:00,2024-03-01T00:20:00Z,9999-01-01T00:00:00Z
+TO003,13,SO2,10,W,Sunday,02:50:00,02:10:00,2024-03-01T00:20:00Z,9999-01-01T00:00:00Z
+TO003,14,H2S,25,W,Sunday,02:30:00,02:10:00,2024-03-01T00:20:00Z,9999-01-01T00:00:00Z
+TO006,05,CO2,400,W,Sunday,02:10:00,01:40:00,2024-06-04T03:59:59Z,9999-01-01T00:00:00Z
+TO006,06,SO2,10,W,Sunday,02:50:00,02:10:00,2024-06-04T03:59:59Z,9999-01-01T00:00:00Z
+TO006,07,H2S,25,W,Sunday,02:30:00,02:10:00,2024-06-04T03:59:59Z,9999-01-01T00:00:00Z