# 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-113a abundance (Western et al., Nature Geosci., 16(4), 309-313, 10.1038/s41561-023-01147-w, 2023) is increasingly affecting CFC-113 measurements, AGAGE CFC-113 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-113 # 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 78.948 0.206 70 2005.292 2005 4 78.903 0.200 273 2005.375 2005 5 78.863 0.227 311 2005.458 2005 6 78.749 0.231 269 2005.542 2005 7 78.565 0.202 343 2005.625 2005 8 78.470 0.234 289 2005.708 2005 9 78.362 0.214 251 2005.792 2005 10 78.371 0.194 297 2005.875 2005 11 78.403 0.247 169 2005.958 2005 12 78.370 0.249 169 2006.042 2006 1 78.412 0.182 266 2006.125 2006 2 78.276 0.192 248 2006.208 2006 3 78.236 0.166 256 2006.292 2006 4 78.203 0.145 313 2006.375 2006 5 78.068 0.162 179 2006.458 2006 6 77.933 0.158 289 2006.542 2006 7 77.847 0.139 308 2006.625 2006 8 77.695 0.141 238 2006.708 2006 9 77.610 0.137 167 2006.792 2006 10 77.665 0.133 317 2006.875 2006 11 77.633 0.148 285 2006.958 2006 12 77.646 0.142 335 2007.042 2007 1 77.616 0.141 238 2007.125 2007 2 77.576 0.141 116 2007.208 2007 3 77.506 0.146 310 2007.292 2007 4 77.414 0.182 220 2007.375 2007 5 77.365 0.162 269 2007.458 2007 6 77.262 0.146 244 2007.542 2007 7 77.117 0.155 253 2007.625 2007 8 76.989 0.149 139 2007.708 2007 9 76.926 0.131 262 2007.792 2007 10 76.922 0.135 319 2007.875 2007 11 76.939 0.138 325 2007.958 2007 12 76.907 0.139 312 2008.042 2008 1 76.868 0.135 254 2008.125 2008 2 76.832 0.141 227 2008.208 2008 3 76.817 0.150 329 2008.292 2008 4 76.773 0.169 332 2008.375 2008 5 76.706 0.187 349 2008.458 2008 6 76.595 0.235 295 2008.542 2008 7 76.581 0.154 97 2008.625 2008 8 76.413 0.160 273 2008.708 2008 9 76.360 0.159 319 2008.792 2008 10 76.381 0.168 83 2008.875 2008 11 76.345 0.161 345 2008.958 2008 12 76.385 0.172 329 2009.042 2009 1 76.420 0.239 261 2009.125 2009 2 76.253 0.187 251 2009.208 2009 3 76.238 0.163 83 2009.292 2009 4 76.195 0.247 141 2009.375 2009 5 76.065 0.148 178 2009.458 2009 6 75.981 0.184 307 2009.542 2009 7 75.927 0.212 341 2009.625 2009 8 75.799 0.212 146 2009.708 2009 9 75.700 0.187 130 2009.792 2009 10 75.659 0.172 97 2009.875 2009 11 75.646 0.223 165 2009.958 2009 12 75.644 0.186 303 2010.042 2010 1 75.589 0.202 272 2010.125 2010 2 75.638 0.204 186 2010.208 2010 3 75.514 0.137 283 2010.292 2010 4 75.489 0.172 299 2010.375 2010 5 75.401 0.161 314 2010.458 2010 6 75.354 0.141 291 2010.542 2010 7 75.232 0.147 278 2010.625 2010 8 75.032 0.181 289 2010.708 2010 9 74.989 0.153 253 2010.792 2010 10 74.860 0.155 325 2010.875 2010 11 74.893 0.208 242 2010.958 2010 12 75.007 0.165 151 2011.042 2011 1 75.033 0.194 326 2011.125 2011 2 75.049 0.189 299 2011.208 2011 3 74.964 0.188 314 2011.292 2011 4 74.798 0.212 287 2011.375 2011 5 74.825 0.217 208 2011.458 2011 6 74.720 0.177 178 2011.542 2011 7 74.522 0.181 277 2011.625 2011 8 74.388 0.197 330 2011.708 2011 9 74.359 0.214 282 2011.792 2011 10 74.357 0.213 327 2011.875 2011 11 74.342 0.191 146 2011.958 2011 12 74.374 0.163 287 2012.042 2012 1 74.370 0.165 238 2012.125 2012 2 74.338 0.162 214 2012.208 2012 3 74.262 0.181 338 2012.292 2012 4 74.236 0.190 191 2012.375 2012 5 74.221 0.183 133 2012.458 2012 6 74.088 0.172 245 2012.542 2012 7 73.928 0.172 271 2012.625 2012 8 73.797 0.181 279 2012.708 2012 9 73.753 0.193 247 2012.792 2012 10 73.789 0.164 315 2012.875 2012 11 73.736 0.156 237 2012.958 2012 12 73.825 0.126 270 2013.042 2013 1 73.830 0.084 335 2013.125 2013 2 73.767 0.101 263 2013.208 2013 3 73.713 0.091 310 2013.292 2013 4 73.647 0.092 279 2013.375 2013 5 73.585 0.083 338 2013.458 2013 6 73.511 0.108 264 2013.542 2013 7 73.379 0.105 337 2013.625 2013 8 73.257 0.093 333 2013.708 2013 9 73.128 0.080 73 2013.792 2013 10 73.209 0.083 196 2013.875 2013 11 73.195 0.098 234 2013.958 2013 12 73.193 0.108 275 2014.042 2014 1 73.166 0.147 199 2014.125 2014 2 73.155 0.157 184 2014.208 2014 3 73.198 0.122 285 2014.292 2014 4 73.152 0.120 326 2014.375 2014 5 73.074 0.123 325 2014.458 2014 6 72.993 0.124 312 2014.542 2014 7 72.924 0.118 324 2014.625 2014 8 72.824 0.120 271 2014.708 2014 9 72.757 0.122 233 2014.792 2014 10 72.730 0.118 316 2014.875 2014 11 72.738 0.117 92 2014.958 2014 12 72.686 0.117 241 2015.042 2015 1 72.635 0.123 305 2015.125 2015 2 72.578 0.114 286 2015.208 2015 3 72.505 0.115 338 2015.292 2015 4 72.464 0.124 292 2015.375 2015 5 72.441 0.108 301 2015.458 2015 6 72.334 0.111 313 2015.542 2015 7 72.176 0.126 298 2015.625 2015 8 72.073 0.107 235 2015.708 2015 9 72.070 0.103 270 2015.792 2015 10 72.051 0.094 113 2015.875 2015 11 72.004 0.114 257 2015.958 2015 12 72.007 0.112 233 2016.042 2016 1 71.956 0.113 286 2016.125 2016 2 71.908 0.117 134 2016.208 2016 3 71.898 0.102 303 2016.292 2016 4 71.825 0.107 277 2016.375 2016 5 71.719 0.107 252 2016.458 2016 6 71.619 0.100 299 2016.542 2016 7 71.519 0.115 283 2016.625 2016 8 71.473 0.127 203 2016.708 2016 9 71.331 0.102 289 2016.792 2016 10 71.334 0.114 271 2016.875 2016 11 71.281 0.110 303 2016.958 2016 12 71.263 0.096 137 2017.042 2017 1 71.249 0.121 291 2017.125 2017 2 71.248 0.116 238 2017.208 2017 3 71.259 0.102 227 2017.292 2017 4 71.165 0.111 187 2017.375 2017 5 71.076 0.104 289 2017.458 2017 6 71.029 0.111 289 2017.542 2017 7 70.988 0.107 268 2017.625 2017 8 70.849 0.105 287 2017.708 2017 9 70.786 0.123 285 2017.792 2017 10 70.756 0.114 304 2017.875 2017 11 70.754 0.171 268 2017.958 2017 12 70.783 0.182 257 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