First of four testing days ended at 6pm in Barcelona (Spain). Following an overcast start in the morning, afternoon ambient temperature was up to 16°C, asphalt to 18°C.
Track was dry in the morning and from early afternoon, after light rain around lunchtime.
In the early afternoon, a red flag stopped running briefly, as a result of the Toro Rosso of Carlos Sainz Jr stopping on the track. The best times today and their tire choices:
Massa (Williams) laps 103 1’23”500 Soft
Ericsson (Sauber) 116 1’24”276 Supersoft
Hamilton (Mercedes) 48 1’24”881 Medium
Kvyat (Red Bull) 75 1’25”947 Medium
Grosjean (Lotus) 75 1’26”177 Soft
Raikkonen (Ferrari) 80 1’26”327 Medium
Sainz Jr (Toro Rosso) 86 1’26”962 Medium
Button (McLaren) 7 1’31”479 Medium