Postpublished at 14:15 Greenwich Mean Time 21 February 2015
Daniil Kvyat completes the 25th lap of his race simulation, 40 more to go. He is lapping in and around the 1:31 mark.
Summary
Maldonado fastest on third day of testing
Vettel in gravel on testing return
Ferrari driver goes on to complete over 100 laps
Lewis Hamilton enjoys trouble-free day
Jenson Button misses most of afternoon
Postpublished at 14:15 Greenwich Mean Time 21 February 2015
Postpublished at 14:13 Greenwich Mean Time 21 February 2015
Image source, MercedesMercedes:, external And the selfie king returns to the track! Sun out, medium tyres on, action!
Postpublished at 14:11 Greenwich Mean Time 21 February 2015
Lewis Hamilton has put away his camera and is out on the circuit for the first time this afternoon, medium tyres bolted on.
Pastor Maldonado, meanwhile, clocks 1:26.208 - the third fastest time of the day as Valtteri Bottas heads out for Williams. He has replaced Felipe Massa, with the two sharing testing duties today.
Get involved #bbcf1published at 14:08 Greenwich Mean Time 21 February 2015
Anthony Wyatt:, external "RE: 13:45 a political bluff or just training? It's so interesting. a game of chess, but more colours."
Postpublished at 14:06 Greenwich Mean Time 21 February 2015
F1 journalist Dan Knutson in Barcelona: "It's amusing to see that Force India has sight screens up at its garage door [see 13:45 entry]. That's the 2014 car, so the team really has no technical things to conceal. Perhaps they are just hiding that ugly anteater nose on the car."
Postpublished at 14:05 Greenwich Mean Time 21 February 2015
Image source, Red Bull RacingFed up with the cold and wet weather in the UK this week? At least it is not too great over in Spain as well.
Postpublished at 13:57 Greenwich Mean Time 21 February 2015
Ten laps into his race run, Daniil Kvyat pits for mediums, heads back out and dips under 1:30, clocking 1:29.7 on the new tyres.
Sebastian Vettel is out, but only briefly as he heads back into the pits after completing a couple of laps.
Postpublished at 13:54 Greenwich Mean Time 21 February 2015
You may have been wondering where Lewis Hamilton is this afternoon. He is still in the Mercedes garage, posing for a selfie.
Image source, Lewis HamiltonHe tweeted:, external "Hope you're having a great day! Still feeling under the weather but I'm pushing for you guys."
Postpublished at 13:50 Greenwich Mean Time 21 February 2015
The sun is breaking through the clouds, prompting one or two teams to start getting things ready for a venture on to the circuit, Pascal Wehrlein one of those as his Force India rolls out of the garage.
The laps are ticking down on Daniil Kvyat's race simulation, too, with 'L61' on the Red Bull board. He has been lapping in the 1:30 and 1:31s.
Postpublished at 13:45 Greenwich Mean Time 21 February 2015
Force India:, external Still quiet in the garage as we wait for the track conditions to improve...
Image source, Force IndiaThere's a conspicuous addition of a driver to the car, though, so some more lappage could be on the cards soon.
Image source, Force IndiaPostpublished at 13:41 Greenwich Mean Time 21 February 2015
F1 journalist Dan Knutson in Barcelona: "Red Bull is doing a very thorough race simulation. A crew member placed bottles of water at each of the seven seats on the pit wall where Christian Horner, Adrian Newey and the engineers sit (although they are not all out there now.)
"Daniil Kvyat did one lap and then came into the pits, stopped 50 yards away from the Red Bull garage, and shut the engine off. The mechanics then pushed the car to the garage, just as it would be pushed from the back of the grid to its starting slot on the grid.
"After a waiting period similar to what it would be on the grid before the start of the race, Kvyat then headed out with intermediate rain tyres fitted to the car, did one lap and pitted for a set of the soft compound Pirelli tyres. He is now off and running and doing the race sim."
Postpublished at 13:40 Greenwich Mean Time 21 February 2015
This morning's pitstop practice is put to good use as Daniil Kvyat pits for softs and heads back out to begin his race simulation.
Marcus Ericsson, meanwhile, is doing his best to make up for lost time with eight laps to his name so far, the best a 1:42.179.
Postpublished at 13:35 Greenwich Mean Time 21 February 2015
Mercedes:, external A brief exploratory foray around the circuit only for Lewis Hamilton so far following the lunch break. It's a little greasy out there...
Postpublished at 13:34 Greenwich Mean Time 21 February 2015
Marcus Ericsson is out for a cautious venture around the track, checking the conditions. Daniil Kvyat is back out too.
Postpublished at 13:31 Greenwich Mean Time 21 February 2015
Sauber:, external Lunch break is over. Marcus (Ericsson) is going out on intermediates as the track still seems to be damp.
Postpublished at 13:27 Greenwich Mean Time 21 February 2015
It is an exploratory lap for Daniil Kvyat on inter tyres as he heads back in and is wheeled back to the Red Bull garage.
Postpublished at 13:26 Greenwich Mean Time 21 February 2015
Everyone is briefly back in the pits, before Daniil Kvyat decides to head on to the empty circuit. He completed 34 laps this morning, spending most of his morning making practice pitstops.
Postpublished at 13:20 Greenwich Mean Time 21 February 2015
F1 journalist Dan Knutson in Barcelona: "Red Bull has a pit board with L65 on it ready to go. A race distance here is 66 laps, so it looks like Daniil Kvyat will be doing a race simulation soon."
Postpublished at 13:19 Greenwich Mean Time 21 February 2015
Pascal Wehrlein takes the Force India out on to the circuit for the first time in the afternoon session, joining Lewis Hamilton and Max Verstappen, who is on the medium tyre.
It appears some of the teams are waiting for the circuit to dry up a bit before heading out, with some areas still a little damp.
Postpublished at 13:14 Greenwich Mean Time 21 February 2015
Image source, Getty ImagesThe reigning world champion was able to gulp down a brew during lunch. He seems to be back on form after a bout of illness earlier this week.