# monthly mean of baseline data from 2005/03 to 2023/12; created: 29-Jan-2025 # comment: Medusa measurements. Output from GCWerks. See Miller et al. (2008). # Since there are indications that the interference from the growing CFC-114a abundance (Western et al., Nature Geosci., 16(4), 309-313, 10.1038/s41561-023-01147-w, 2023) is increasingly affecting CFC-114 measurements, AGAGE CFC-114 data will be withheld from 2018 onward until further notice. # data_owner_email: rfweiss@ucsd.edu, jmuhle@ucsd.edu # data_owner: Ray F. Weiss, Jens Muhle # station_long_name: Trinidad Head, California # inlet_base_elevation_masl: 107.000000 # inlet_latitude: 41.0541 # inlet_longitude: -124.151 # data_dir: /agage/trinidadhead-medusa # species: cfc-114 # calibration_scale: SIO-05 # units: ppt # file_created: 2024-11-11 07:14:06 # filled (flagged) data value: -99.900 # # CREDIT FOR USE: This is a formal notification for data users. # For scientific purposes access to these data is unlimited and # provided without charge. By their use you accept that an offer # of co-authorship will be made through personal contact with the # data providers or owners whenever substantial use is made of # their data. In all cases an acknowledgement must be made to the # data providers or owners and the data center when these data are # used within a publication. # # CONTACT POINT: rfweiss@ucsd.edu; jmuhle@ucsd.edu; raywang@eas.gatech.edu # # 1st column, time in farction of year # 2nd column, year (YYYY) # 3rd column, month (1 to 12) # 4th column, mean (monthly mean value) # 5th column, std. dev. (standard deviation of monthly mean) # 6th column, numb (number of measurements for monthly mean) # time year month mean std. dev. numb 2005.208 2005 3 16.595 0.040 71 2005.292 2005 4 16.578 0.047 270 2005.375 2005 5 16.573 0.041 314 2005.458 2005 6 16.563 0.046 267 2005.542 2005 7 16.560 0.045 342 2005.625 2005 8 16.547 0.049 289 2005.708 2005 9 16.539 0.052 253 2005.792 2005 10 16.536 0.047 299 2005.875 2005 11 16.558 0.055 166 2005.958 2005 12 16.568 0.057 172 2006.042 2006 1 16.531 0.047 270 2006.125 2006 2 16.534 0.045 245 2006.208 2006 3 16.555 0.037 256 2006.292 2006 4 16.549 0.034 312 2006.375 2006 5 16.526 0.037 179 2006.458 2006 6 16.527 0.035 287 2006.542 2006 7 16.541 0.034 310 2006.625 2006 8 16.527 0.034 239 2006.708 2006 9 16.522 0.037 169 2006.792 2006 10 16.545 0.037 316 2006.875 2006 11 16.545 0.037 284 2006.958 2006 12 16.530 0.036 332 2007.042 2007 1 16.523 0.032 237 2007.125 2007 2 16.528 0.033 116 2007.208 2007 3 16.531 0.034 306 2007.292 2007 4 16.562 0.036 221 2007.375 2007 5 16.563 0.039 267 2007.458 2007 6 16.530 0.035 242 2007.542 2007 7 16.517 0.035 252 2007.625 2007 8 16.509 0.036 142 2007.708 2007 9 16.493 0.041 266 2007.792 2007 10 16.491 0.036 313 2007.875 2007 11 16.536 0.039 331 2007.958 2007 12 16.523 0.039 318 2008.042 2008 1 16.521 0.033 256 2008.125 2008 2 16.520 0.036 232 2008.208 2008 3 16.501 0.038 330 2008.292 2008 4 16.524 0.043 332 2008.375 2008 5 16.518 0.046 346 2008.458 2008 6 16.486 0.058 284 2008.542 2008 7 16.473 0.037 97 2008.625 2008 8 16.518 0.047 277 2008.708 2008 9 16.513 0.045 313 2008.792 2008 10 16.506 0.042 83 2008.875 2008 11 16.502 0.045 350 2008.958 2008 12 16.475 0.050 329 2009.042 2009 1 16.481 0.056 260 2009.125 2009 2 16.478 0.049 251 2009.208 2009 3 16.451 0.043 83 2009.292 2009 4 16.452 0.060 313 2009.375 2009 5 16.461 0.054 177 2009.458 2009 6 16.465 0.060 307 2009.542 2009 7 16.482 0.070 345 2009.625 2009 8 16.490 0.069 146 2009.708 2009 9 16.464 0.077 131 2009.792 2009 10 16.411 0.050 98 2009.875 2009 11 16.411 0.062 165 2009.958 2009 12 16.439 0.055 306 2010.042 2010 1 16.433 0.047 271 2010.125 2010 2 16.436 0.050 190 2010.208 2010 3 16.421 0.037 279 2010.292 2010 4 16.436 0.041 297 2010.375 2010 5 16.420 0.042 312 2010.458 2010 6 16.408 0.036 295 2010.542 2010 7 16.400 0.037 284 2010.625 2010 8 16.391 0.038 291 2010.708 2010 9 16.368 0.042 265 2010.792 2010 10 16.375 0.046 325 2010.875 2010 11 16.383 0.048 222 2010.958 2010 12 16.387 0.044 151 2011.042 2011 1 16.386 0.045 332 2011.125 2011 2 16.383 0.042 301 2011.208 2011 3 16.384 0.045 317 2011.292 2011 4 16.401 0.051 287 2011.375 2011 5 16.431 0.051 209 2011.458 2011 6 16.406 0.037 177 2011.542 2011 7 16.373 0.043 278 2011.625 2011 8 16.363 0.044 335 2011.708 2011 9 16.355 0.050 286 2011.792 2011 10 16.338 0.059 332 2011.875 2011 11 16.338 0.053 145 2011.958 2011 12 16.347 0.037 289 2012.042 2012 1 16.353 0.041 238 2012.125 2012 2 16.349 0.042 217 2012.208 2012 3 16.342 0.040 334 2012.292 2012 4 16.344 0.048 193 2012.375 2012 5 16.368 0.049 134 2012.458 2012 6 16.353 0.044 245 2012.542 2012 7 16.355 0.046 273 2012.625 2012 8 16.332 0.045 281 2012.708 2012 9 16.322 0.044 250 2012.792 2012 10 16.332 0.042 317 2012.875 2012 11 16.332 0.043 242 2012.958 2012 12 16.359 0.032 271 2013.042 2013 1 16.360 0.023 341 2013.125 2013 2 16.354 0.024 261 2013.208 2013 3 16.356 0.024 311 2013.292 2013 4 16.361 0.024 279 2013.375 2013 5 16.362 0.021 337 2013.458 2013 6 16.355 0.031 267 2013.542 2013 7 16.337 0.025 336 2013.625 2013 8 16.326 0.025 337 2013.708 2013 9 16.313 0.018 73 2013.792 2013 10 16.343 0.025 198 2013.875 2013 11 16.339 0.025 236 2013.958 2013 12 16.332 0.029 267 2014.042 2014 1 16.334 0.038 200 2014.125 2014 2 16.347 0.045 186 2014.208 2014 3 16.361 0.038 284 2014.292 2014 4 16.360 0.034 329 2014.375 2014 5 16.351 0.033 323 2014.458 2014 6 16.353 0.036 313 2014.542 2014 7 16.345 0.036 320 2014.625 2014 8 16.334 0.037 274 2014.708 2014 9 16.337 0.042 233 2014.792 2014 10 16.348 0.034 316 2014.875 2014 11 16.354 0.040 92 2014.958 2014 12 16.349 0.039 242 2015.042 2015 1 16.346 0.037 306 2015.125 2015 2 16.341 0.035 285 2015.208 2015 3 16.345 0.033 340 2015.292 2015 4 16.343 0.039 293 2015.375 2015 5 16.352 0.032 308 2015.458 2015 6 16.348 0.030 314 2015.542 2015 7 16.328 0.028 296 2015.625 2015 8 16.320 0.030 237 2015.708 2015 9 16.322 0.033 273 2015.792 2015 10 16.321 0.033 112 2015.875 2015 11 16.318 0.032 255 2015.958 2015 12 16.320 0.035 231 2016.042 2016 1 16.320 0.033 286 2016.125 2016 2 16.316 0.029 134 2016.208 2016 3 16.321 0.030 311 2016.292 2016 4 16.318 0.034 284 2016.375 2016 5 16.318 0.032 255 2016.458 2016 6 16.315 0.032 300 2016.542 2016 7 16.312 0.032 280 2016.625 2016 8 16.317 0.040 202 2016.708 2016 9 16.297 0.032 290 2016.792 2016 10 16.296 0.032 274 2016.875 2016 11 16.275 0.034 302 2016.958 2016 12 16.281 0.036 140 2017.042 2017 1 16.276 0.037 292 2017.125 2017 2 16.299 0.045 239 2017.208 2017 3 16.310 0.037 227 2017.292 2017 4 16.317 0.032 188 2017.375 2017 5 16.314 0.035 288 2017.458 2017 6 16.312 0.035 289 2017.542 2017 7 16.311 0.034 272 2017.625 2017 8 16.293 0.034 286 2017.708 2017 9 16.300 0.034 295 2017.792 2017 10 16.299 0.034 303 2017.875 2017 11 16.285 0.045 271 2017.958 2017 12 16.292 0.045 261 2018.042 2018 1 NaN NaN 0 2018.125 2018 2 NaN NaN 0 2018.208 2018 3 NaN NaN 0 2018.292 2018 4 NaN NaN 0 2018.375 2018 5 NaN NaN 0 2018.458 2018 6 NaN NaN 0 2018.542 2018 7 NaN NaN 0 2018.625 2018 8 NaN NaN 0 2018.708 2018 9 NaN NaN 0 2018.792 2018 10 NaN NaN 0 2018.875 2018 11 NaN NaN 0 2018.958 2018 12 NaN NaN 0 2019.042 2019 1 NaN NaN 0 2019.125 2019 2 NaN NaN 0 2019.208 2019 3 NaN NaN 0 2019.292 2019 4 NaN NaN 0 2019.375 2019 5 NaN NaN 0 2019.458 2019 6 NaN NaN 0 2019.542 2019 7 NaN NaN 0 2019.625 2019 8 NaN NaN 0 2019.708 2019 9 NaN NaN 0 2019.792 2019 10 NaN NaN 0 2019.875 2019 11 NaN NaN 0 2019.958 2019 12 NaN NaN 0 2020.042 2020 1 NaN NaN 0 2020.125 2020 2 NaN NaN 0 2020.208 2020 3 NaN NaN 0 2020.292 2020 4 NaN NaN 0 2020.375 2020 5 NaN NaN 0 2020.458 2020 6 NaN NaN 0 2020.542 2020 7 NaN NaN 0 2020.625 2020 8 NaN NaN 0 2020.708 2020 9 NaN NaN 0 2020.792 2020 10 NaN NaN 0 2020.875 2020 11 NaN NaN 0 2020.958 2020 12 NaN NaN 0 2021.042 2021 1 NaN NaN 0 2021.125 2021 2 NaN NaN 0 2021.208 2021 3 NaN NaN 0 2021.292 2021 4 NaN NaN 0 2021.375 2021 5 NaN NaN 0 2021.458 2021 6 NaN NaN 0 2021.542 2021 7 NaN NaN 0 2021.625 2021 8 NaN NaN 0 2021.708 2021 9 NaN NaN 0 2021.792 2021 10 NaN NaN 0 2021.875 2021 11 NaN NaN 0 2021.958 2021 12 NaN NaN 0 2022.042 2022 1 NaN NaN 0 2022.125 2022 2 NaN NaN 0 2022.208 2022 3 NaN NaN 0 2022.292 2022 4 NaN NaN 0 2022.375 2022 5 NaN NaN 0 2022.458 2022 6 NaN NaN 0 2022.542 2022 7 NaN NaN 0 2022.625 2022 8 NaN NaN 0 2022.708 2022 9 NaN NaN 0 2022.792 2022 10 NaN NaN 0 2022.875 2022 11 NaN NaN 0 2022.958 2022 12 NaN NaN 0 2023.042 2023 1 NaN NaN 0 2023.125 2023 2 NaN NaN 0 2023.208 2023 3 NaN NaN 0 2023.292 2023 4 NaN NaN 0 2023.375 2023 5 NaN NaN 0 2023.458 2023 6 NaN NaN 0 2023.542 2023 7 NaN NaN 0 2023.625 2023 8 NaN NaN 0 2023.708 2023 9 NaN NaN 0 2023.792 2023 10 NaN NaN 0 2023.875 2023 11 NaN NaN 0 2023.958 2023 12 NaN NaN 0