Data input
Analytical data should be written or pasted into the
worksheet directely below the green bar (columns A-J (or L), from line 7): Be careful not to switch the column
sequence.Ý Each sample occupies one line
in the spreadsheet. There is no maximum number of input lines accepted,
ComPbCorr will continue until it encounters a blank line (or rather, an empty
cell in the first column).
Analytical errors should be given as one sigma absolute errors.
The two right-hand columns (the error on the
238U/232Th ratio and the error correlation coefficient)
are optional. If left blank, a 1 % error is assumed in 238U/232Th.
If the error correlation column is left blank, be careful to select a preset
value for the correlation coefficient for errors in 206Pb/238U
and 207Pb/235U.