Those times have been updated - sorry for the delay ladies and gents.
Hamilton has surpassed Alonso's daily lap total in just three hours.
@abudhabifan: Lotus is not yet running its engine at full power and we don't know fuel loads. The Force India time could mean a lot or it could mean very little. Personally, I reckon the guys at Mercedes HPP in Brixworth know what they are doing and haven't made the 2015 engine slower.
@mfbull: I bet it's not as cool as mine. A piston from the Cosworth DFV that powered Emerson Fittipaldi's McLaren at the 1974 Monaco Grand Prix.
@Krish: One hour and 50 minutes to go. So just over midway through this afternoon session, which ends at 18:00 local time.
@GeorgeS.: Yep, the regulation is for four PUs over the course of the season. They can change between them as much as they want, but can't go tampering inside once they have started using one.
@burnettbull: Yep, it's by far the strongest day for Red Bull during pre-season testing so far. The 98 laps will be a bigger boost than the outright lap time though.
@Mikey: I know you know I don't know, but, you know, maybe no-one knows...
@MonkeySEATclub: I don't know for sure, but I believe it reduces drag. Mercedes had two dips in the top of the wing at Spa and Monza last year.
Ricciardo completes lap 100 - the first man to reach a century of laps so far in Barcelona.
@MadhusudanRamakrishna: Because in reality it is very dull. Imagine an eight hour FP1 session when most of the time no more than two cars are on track and you are not allowed to see in any of the garages. Sky attempted to do live coverage a couple of years ago and the figures weren't great. I can assure you, if there was money to be made then Bernie would have found a way of doing it. However, there are some interesting news angles that come out of it and so it is perfect for website coverage.
@Sitank: That's a choice made by drivers and their engineers, which has always been the case. Nowadays, simulations give the teams a good idea before they arrive at the track and then decisions are made from there on. At most tracks they want the maximum downforce possible from the package (while limiting drag of course). Spa is still an interesting track in that regard as some cars run lots of wing to be fast in the corners and some cars run skinny wings for straight-line speed. It's all part of the strategy of a race weekend.
@MadhusudanRamakrishna: My advice would be to take a trip to a test if you get a chance. You can often buy paddock access for less then a general admission ticket at a race.
Palmer improves to a 1:26.280, putting the Lotus reserve driver up into sixth above Hamilton.
Hamilton is still roaring through his schedule. He's just clocked lap 69. Remember McLaren finished just 79 laps in the whole of Jerez earlier this month. Hamilton is on course to match or beat that in one afternoon session.
That is how close you can get at testing (before you get elbowed in the face by the man on the right)
Red Bull may not be able to see him but we certainly can here in the media centre - Ricciardo iss top of the timing screens in mileage and time. He's just ticked over to 112 laps.
@MonkeySEATclub: That's true on the MP4-30 as well. They are there to create vortices that help the airflow reattach to the wing when the DRS flap is closed.