By purchasing this card, you will be able to access a total 2000 data points from all the on-line annual and quarterly IEA databases as well as the Monthly Gas Data service (but not the Monthly Oil Data Service or the CO2 emission factors from electricity generation). You can access all the databases either for a single data point or for time series and tables. Every time you make a query a message will inform you how many units the query will cost in terms of data points. You need to agree by clicking the OK button before getting the information you request. Your credit of units will then be reduced by the number of units used in the query. In the case the credit on your data card is insufficient for the query, you receive a message informing you and suggesting you buy additional units in order to resubmit the query.