Pre-season Formula 1 testing in Europe is never the warmest, but the past two days at Barcelona have been excessively cold - watching from trackside or hanging around the pitlane has been a constant battle with very low temperatures.
These conditions do have an impact on the work the teams are able to do, and it hasn't helped us to get much of a picture of the competitive order. While this weather doesn't cause trouble as such for the teams, and it allows some inherent car characteristics to come through, it does make life difficult.
For a start, it's more difficult to get the tyres to a sensible temperature. For some of the smaller teams with less downforce, it can take five or more laps to get the Pirellis working, which is a problem for the drivers and the teams trying to build up data.