It's still pretty grim and grey out there. Air temp is 12.5C, track temp down at 16.7C. A long way from the sorts of temperatures we can expect when F1 arrives in Melbourne and Malaysia next month.
@Red_ZA: I've seen a few knocking around the paddock, but it's pretty cold out there so no one is hanging around too long outdoors. Romain Grosjean is here and was heading out on his bike for a cycle at about 14:00.
@Omkar: He's currently lapping in the 1:23s on medium tyres but at this stage I wouldn't read too much into that.
Kvyat heads out again in the (front) wingless Red Bull. He attempted a practice start at the end of the pit lane but it was pretty tardy by F1 standards.
@Anonymous: That's not always the case. Another reason they were faster in quali at times last year was because they could run the MGU-K at full whack then, but were struggling to do so in race conditions.
Bottas cutting his lap times now, shaving his personal best down to a 1:22.983.
@Kumar: Not at the moment.
Bottas and Maldonado go side by side into Turn 2 before the Williams pulls clear.
Maldonado now the only man on track. He's up to 40 laps in the Lotus E23.
Looks like Maldonado has stopped on track, at the back end of the circuit somewhere. Red flags out.
So that's the first red flag of the session, and has come out so the E23 can be recovered and brought back to the pits.
Just under an hour and a half to go in this test.
The green flags are back out and Vettel wastes no time going straight back out to the circuit.
Vettel goes purple in the first sector but can't improve on his best time.
@shourya: It's been having a "recurring" problem today and earlier said it hoped to come out sometime this afternoon but we are yet to see Button re-emerge.
@shourya: You shouldn't read too much into the time itself.
@Amerigo: Testing finishes at 5pm local time so we've got just over one hour and ten minutes left.
Bottas completes another personal best - a 1:22.319 - to move within 1.3s of Vettel.
Update from the world champions.....
So that's the last we'll see of Hamilton today. He finishes the day on 91 laps.
Proof there that Mercedes is not invincible. But then we knew that from last year, didn't we?
Nasr's headline time came on a soft tyre run.
It might be finishing the second day early, but Mercedes already has 246 laps of Jerez under its belt.