Free Access

Fig. 3


Regression of TIM and SATIRE-S data over the period 28 February 2003 to 1 November 2009 (black) and for 21 April 2004 to 1 November 2009 (green). The single free parameter is varied until a regression slope close to 1.00 is found for the longer period. The dotted line representing a perfect fit is hidden behind the 2003 − 2009 black regression line.

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.