Those brave souls to have taken to the track today are...

• Daniel Ricciardo (Red Bull) - 2 laps
• Fernando Alonso (McLaren, pictured) - 1 lap
• Marcus Ericsson (Sauber) - 1 lap
• Robert Kubica (Williams) - 1 lap
• Brendon Hartley (Toro Rosso) - 1 lap

Here is another one of our talented readers. Loving Dave Foord's painting of Lewis Hamilton.

See Dave's efforts by clicking on the link below.

Another installation lap done, this time from Brendon Hartley in his Toro Rosso. That's five drivers that have been out on the track, for a total of six laps, in seven hours.

We've had lots of response to our call for those times when Formula 1 has raced in extreme conditions.

Here's the first one where it has been too hot, and it comes from Dallas in 1984, when the air temperature at the start of the race was an insane 40C. It all got too much for Nigel Mansell.

Any more extreme conditions you can remember? Let us know, via #bbcf1

Only five drivers have been on the track today, while another eight were scheduled to be but have not been seen.

But what about the rest, those who were not racing (or meant to be racing)? Here's what three of them have done.

Kevin Magnussen has been posing for photos, Pierre Gasly has been answering fans questions on social media, with Charles Leclerc doing some interviews.

BBC Sport app users may need to click on the link to see the tweets.

For the first time in an hour, we have had a driver out on track.

Robert Kubica of Williams has done an installation lap.

That means we have had four teams look at the track conditions (Red Bull, McLaren, Sauber and Williams) with six (Ferrari, Haas, Force India, Toro Rosso, Mercedes and Renault) deciding against it.

Some days, you just know it is going to be a disappointing day and have to take whatever positives you can.

Therefore, may I point you in the direction of this great tweet from Rachel, who has spent some time making a Lewis Hamilton snowman.

Can anyone else do better? Send us your pictures via #bbcf1 if you have any great pictures to cheer up some sad Formula 1 fans.

BBC Sport app users may need to click on the link to see the tweet.

Valtteri Bottas has just been answering some questions and you can see what he said, via the Formula 1 official Twitter account.

BBC Sport app users may need to click on the link to see the video.

Glen Howell: April 1973, Silverstone held a non championship F1 race and it snowed.

Dave Pegler‏: Mario Andretti debuting the Lotus 79 for the press at Silverstone in April 1978. It was snowing then but that didn't stop him from giving it what seemed quite a bit of welly on the old (and much faster!) GP circuit.

Littleg: Extreme Weather F1: Fuji 2007 (pictured). VET/WEB colliding before they were team mates, Ferrari 'losing' the email telling them to start on wet tyres, Lewis keeping his head when everyone else lost theirs.

Image source, Getty Images

Dan Knutson
F1 journalist in Barcelona

One of the most popular pieces of high tech kit in the paddock during these cold, wet, snowy test days has been the coffee machine in the Pirelli hospitality area.

Image source, Dan Knutson

Today has been disappointing, but the rest of the testing should be good.

We are in action again tomorrow, before another block of four days from Tuesday, 6 March to Friday, 9 March.

Cloudy tomorrow, with sunny spells on the sixth, a full day of sunshine on the seventh and more sunny spells on the eighth and ninth.

Who's next to brave the conditions? Anyone? Remember, the session is open until 17:00 GMT.

We haven't had much action to enjoy today. Four laps in total, and that's it.

But two of those laps have come from Red Bull's Daniel Ricciardo and here, courtesy of the Formula 1 Twitter account, is a bit of one of them.

Savour the moment. Enjoy the video.

Martijn Brouwer: Verstappen, driving masterclass Brazil 2016. A legend was born.

Lester Mak: Canada 2011. The longest GP ever. Four seasons in a day, two-hour rain delay. Jenson Button’s epic win from last place and on the last lap from Vettel. Won with five pit stops, one drive through penalty, another penalty for speeding under safety car and two collisions.

Image source, Getty Images

Daniel Ricciardo is back in the garage after "a wet and wild" installation lap. Only three drivers have tried their luck on the track and the other 10 who are scheduled to go today have decided it against it so far.

BBC Sport app users may need to click on the link to see the tweet.

So day three has been pretty much a non-event so far, but what happened on the opening two days?

On day one, Daniel Ricciardo certainly put in an effort - 105 laps in fact - and was the quickest.

Yesterday, on day two, Sebastian Vettel was 0.303 seconds faster than Valtteri Bottas.

Cameron Lightwood UK: One time I remember and I'm sure everyone will remember, Canada 2011 Jenson Button made that impressive fight back to win the race on the last lap.

Andrew Benson
BBC Sport’s chief F1 writer

This has been a pretty difficult week for the teams, with the track conditions very cold and unrepresentative even when it has not been raining.

But Mercedes driver Valtteri Bottas says it has not been wasted. “I have learned a lot about how to get heat in the tyres which can be a benefit sometimes,” the Finn said.

“I have learned about general behaviour and how it handles and how to drive it. But I still need better conditions to unlock everything. We have learned a lot from our aero testing.

"We have done some mechanical tests and got some answers we can trust a good percentage even though it’s cold. It is not two days lost yet. Everyone is looking ahead for tomorrow and next week.”

Image source, Getty Images

I get the feeling that good things are coming.

Daniel Ricciardo, for a second time, heads out for a lap. Still too wet though, and he makes an instant return. He has two laps done, Fernando Alonso and Marcus Ericsson one each.

Sadly, the trusty Formula 1 timing app has the dreaded 'in pit' words next to the names of our potential 13 drivers today.

Image source, Getty Images

We have not seen much of Lewis Hamilton in testing. Half of a session on Monday, and that's it so far.

Today, the only time we have seen him is holding a snowman in a tweet from Mercedes.

BBC Sport app users may need to click on the link to see the tweet.