*******************************************************************
*** CO2 averages derived from continuous data for the           ***
*** South Pole Station                                          ***
***                                                             ***
***                                                             ***
*** September 2004                                              *** 
***                                                             ***
*** Source: Carbon Dioxide Research Group                       ***
***         Scripps Institution of Oceanography                 ***
***         University of California, San Diego                 ***
***         La Jolla, California, USA 92023-0444                ***
*******************************************************************

These averages are ultimately based on measurements of 4 air 
samples per hour taken atop intake lines on several towers during steady 
periods of CO2 concentration of not less than 6 hours per day; if no such 
periods are available on a given day, then no data are used for that day. 
The "Weight" column gives the number of days used in each average. At the 
South Pole, this number is always 1. 
Flag codes are explained in the NDP writeup, available electronically 
from the home page of this data set. CO2 concentrations are in terms 
of the 1999 calibration scale (Keeling et al., 2002) available electronically 
from the references in the NDP writeup which can be accessed from the 
home page of this data set.

Station Sample Weight Flag  CO2 concentration
 code   date          code     (ppmv)

SPO    600604   1    0         316.31
SPO    600702   1    0         316.56
SPO    600807   1    0         316.82
SPO    600819   1    0         316.63
SPO    610525   1    0         316.84
SPO    610608   1    0         316.72
SPO    610623   1    0         317.01
SPO    610708   1    0         316.86
SPO    610723   1    0         317.03
SPO    610807   1    0         317.24
SPO    610827   1    0         317.49
SPO    610905   1    0         317.83
SPO    610915   1    0         317.47
SPO    611018   1    0         317.95
SPO    611027   1    0         317.51
SPO    611108   1    0         317.76
SPO    611123   1    0         317.97
SPO    611208   1    0         317.75
SPO    611223   1    0         317.58
SPO    620110   1    0         317.49
SPO    620208   1    0         317.31
SPO    620222   1    0         317.22
SPO    620308   1    0         317.09
SPO    620323   1    0         317.03
SPO    620408   1    0         317.03
SPO    620423   1    0         317.20
SPO    620508   1    0         317.10
SPO    620522   1    0         317.26
SPO    620608   1    0         317.33
SPO    620628   1    0         317.22
SPO    620709   1    0         317.16
SPO    620723   1    0         317.41
SPO    620808   1    0         317.53
SPO    620823   1    0         317.75
SPO    620907   1    0         317.99
SPO    620923   1    0         318.14
SPO    621208   1    0         318.69
SPO    621223   1    0         318.57
SPO    630108   1    0         318.31
SPO    630123   1    0         317.95
SPO    630208   1    0         317.88
SPO    630222   1    0         317.86
SPO    630308   1    0         317.59
SPO    630323   1    0         317.36
SPO    630416   1    0         317.73
SPO    630425   1    0         318.11
SPO    630508   1    0         318.36
SPO    630523   1    0         318.17
SPO    630605   1    0         318.20
SPO    630623   1    0         318.23
SPO    630707   1    0         318.32
SPO    630724   1    0         318.21
SPO    630808   1    0         318.57
SPO    630922   1    0         318.58
SPO    631011   1    0         318.92
SPO    631019   1    0         319.07