Open Access

Table 1.

Data used in the construction of DTM2013.

Measurement Period
CHAMP ρ 05/2001–08/2010
GRACE ρ 01/2003–12/2011
GOCE ρ 11/2009–05/2012
Starlette and Stella ρ 01/1994–12/2010
Deimos-1 ρ 03/2010–09/2011
CACTUS ρ 07/1975–01/1979
OGO6 T 06/1969–08/1975
DE-2 T, He, O, N2 08/1981–02/1983
AE-C N2 01/1974–04/1977
AE-E T, He, O 12/1975–05/1981

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.