There are 3 Excel files:

www.seao2.info/pubs/data.ridgwell_2005/run_margeol_7mean_200Ma.xls
www.seao2.info/pubs/data.ridgwell_2005/run_margeol_7low_200Ma.xls
www.seao2.info/pubs/data.ridgwell_2005/run_margeol_7high_200Ma.xls

run_margeol_7mean_200Ma.xls -- is the solid line in Figure 6, and assumes a change in mode of carbonate deposition at 200 Ma.

run_margeol_7low_200Ma.xls + run_margeol_7mean_200Ma.xls -- are the 'uncertainties' -- e.g. as per in Figures 4 and 5.

In the DATA tab, along the sheet are 2 sections:

< neri_kyrstepdata_SUR > (MEAN VOLUME-BASED SURFACE CONDITIONS)

< neri_kyrstepdata_TOT > (MEAN VOLUME-BASED GLOBAL CONDITIONS)

depending on whether you are after mean surface, or mean global properties (or both).

The data 'headers' are actually at the bottom of the data on line 40.

On the GRAPHS sheet are some plots to orientate.
(EXPORT is just cleaned up plots that I creaed the figures using.)