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.

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