This dataset contains the value of the Open Science Access Advantage indicator calculated for all the ressources accessed on the French Open Science platform HAL.archives-ouvertes.fr, between September 2023 et August 2024. The data have been obtained through a partnership with the platform which provided us all the logs of its server for the period above. Though a parnership with IPinfo.io, we categorized these access geographically and by economic sector. The Open Science Access Advantage compares the ratio of accesses directed to OS resources over the total number of views, to the ratio of open publications among the relevant resources. This indicator has been computed for the entire HAL platform, for a single discipline (considering all publications associated with it), a single country or sector (considering all the publications accessed from it), as well as for any combination of thereof. The indicator is operationalized through a relatively straightforward metric comparing the ratio to which OS resources are accessed to the ratio of their availability. More precisely, the metric is calculated as follows Where: SO (stock open) is the number OS resources accessed in a given disciplinary, sectoral and geographical combination. SC (stock closed) is the number of non-OS resources accessed in the same combination. AO (access open) is the number of views collected by OS resources AC (access closed) is the number of views collected by non-OS resources Basically, the metrics compare the ratio of SO resources (the part of SO over the total of relevant resources) to the ratio of the accesses directed to SO resources (over the total of accesses). Since both the ratios vary between zero and one, their difference varies between one (when most of the available resources are closed and yet most of the accesses are directed to few open ones) and minus one and is minimal (when most of the available resources are open and yet most of the accesses are directed to the few close ones). As both ratios can be expressed as percentages, the Open Access Advantage indicator can also be expressed as a percentage which is the larger the higher is the the probability of open resources to be consulted compared to closed ones.