Phil wrote:+1 Blanchimont!
Am I reading it right in that it seems, the 2014 test numbers most probably have been running a bit lighter on fuel, hence the quicker times compared to VET2013? On the VET2013, it's nicely visible how the times came down across the 4 stints. On the 2014 stints, the times seem to be rather comparable, so probably 3 race sim stints with similar fuel load?
Impossible to tell, could be that the first three stints for Rosberg were with equivalent to starting with full tanks, as they do correspond broadly to Vettel's race pace just a little bit quicker. For the final stint they could then have topped up the fuel again. Equally they could be lighter in all stints except the last and just playing around with the setup, giving the variation in pace.
Also don't forget that the 2014 cars start the race slightly lighter than the 2013 cars but that the weight reduces more slowly. So we'd expect to see more tyre degradation from carrying more weight for longer, and less increase in speed in subsequent stints. However the tyres are also more durable, etc.
Either way that looks like some solid race pace from Rosberg both in relation to the other 2014 cars and to Vettel last year.