Ferrari driver Sebastian Vettel posted the fastest time on the second day of Pirelli's wet tyre test at Paul Ricard.
Vettel, who took over duties from team-mate Kimi Raikkonen, racked up 134 laps in the SF15-T and set the quickest time.
Daniil Kvyat was second for Red Bull while McLaren youngster Stoffel Vandoorne placed third.
"It was fun, even if, with a lot of different prototype tyres, you may get different results, without knowing which tyres we are testing, or if they are going to be used in the future or not," said Vettel.
"You can have a rough idea which tyres you test and how the tyres were last year, but it’s not clear what’s going to happen with the tyres after this, even if for sure there are some results, but it’s too early to say."
Pirelli organised the two-day test in order to improve its wet weather tyres.
Different compounds and constructions were tested, with drivers unaware of the type of tyre being used at any point.
Across the two days of running, 659 laps of Paul Ricard were completed by the quintet of drivers, totalling 2326 kilometres.
The data will now be analysed by Pirelli at its base in Milan, with the company admitting that the cool conditions were "not ideally representative."
Official pre-season testing will begin at the Circuit de Barcelona-Catalunya on February 22.
|2||Daniil Kvyat||Red Bull||1:06.833||113||Tuesday|
|4||Daniel Ricciardo||Red Bull||1:08.713||99||Monday|