It is likely that Alonso's time was a qualifying simulation run as Renault conclude their test today while most other teams stay another day.
Jarno Trulli covered the most number of laps with 131
It appears that the teams and drivers are struggling with the different compounds this season as Bridestone have been asked to increase the difference between the different compounds.
Adrian Sutil from the Force India team had this to say about the tyres:
Meanwhile Fernando Alonso seemed pleased with the latest test and said:... we then did quite a lot of tests with the tyres. We tried the soft, supersoft and medium compounds. On the long runs they behaved quite differently and the biggest problem was with the graining. It happens very quickly, then gets worse and the grip never comes back. We are talking big differences in lap times - I have never had such a big graining issue, but I can see nearly everyone is struggling with a similar problem
Full resultsI'm very happy with the result from this test as we had two trouble-free days, a very consistent car and the work we have done has been very useful.
I would like to thank the team for all their hard work this week as I know they have worked very hard to make sure we could do everything we needed to.
Rank Driver Team Best Laptime Total Laps
1 Fernando Alonso Renault 1:19.945 130
2 Kimi Raikkonen Ferrari 1:20.250 105
3 Nick Heidfeld BMW Sauber 1:20.520 99
4 Jarno Trulli Toyota 1:20.540 131
5 Mark Webber Red Bull Racing 1:20.894 107
6 Kazuki Nakajima Williams 1:20.948 83
7 Lewis Hamilton McLaren Mercedes 1:21.302 70
8 Adrian Sutil Force India F1 1:21.411 79
Renault and Force India have concluded their testing for this week while the rest of the teams conclude their test on Thursday