The first pre-season Formula 1 test is done and dusted. Deciphering the pecking order from just four days of secretive running is nigh on impossible, but the unseasonally cold weather and limited running as a result makes that an even harder task.
We've compiled the quickest time by each driver and the day they posted it and on what tyre to give you a slightly clearer picture.
The data below suggests Lewis Hamilton and Mercedes have the upper hand – the Briton's time was just two-tenths shy of his 2017 pole position time and three-tenths quicker than what Sebastian Vettel managed on the soft tyre.
But with fuel limits undisclosed, as well as strict testing programmes, making an assumption based on times/tyres alone would be unwise.
We've also compiled total laps by driver, team and power unit to give an idea as to how reliable the four-day test was for each team/supplier.
Test 1: Combined Times
| Pos | Driver | Team | Time | Day | Tyre |
| 1 | L. Hamilton | Mercedes | 1:19.333 | Thursday |  |
| 2 | S. Vettel | Ferrari | 1:19.673 | Tuesday |  |
| 3 | S. Vandoorne | McLaren | 1:19.854 | Thursday |  |
| 4 | V. Bottas | Mercedes | 1:19.976 | Tuesday | |
| 5 | D. Ricciardo | Red Bull | 1:20.179 | Monday | |
| 6 | K. Magnussen | Haas | 1:20.317 | Thursday |  |
| 7 | M. Verstappen | Red Bull | 1:20.326 | Tuesday | |
| 8 | K. Raikkonen | Ferrari | 1:20.506 | Monday | |
| 9 | N. Hulkenberg | Renault | 1:20.547 | Monday | |
| 10 | F. Alonso | McLaren | 1:20.929 | Thursday | |
| 11 | C. Sainz Jr | Renault | 1:20.940 | Thursday | |
| 12 | L. Stroll | Williams | 1:21.142 | Thursday | |
| 13 | P. Gasly | Toro Rosso | 1:21.318 | Tuesday | |
| 14 | R. Kubica | Williams | 1:21.495 | Tuesday | |
| 15 | S. Sirotkin | Williams | 1:21.822 | Tuesday | |
| 16 | E. Ocon | Force India | 1:21.841 | Tuesday | |
| 17 | S. Perez | Force India | 1:21.973 | Thursday | |
| 18 | B. Hartley | Toro Rosso | 1:22.381 | Monday | |
| 19 | R. Grosjean | Haas | 1:22.578 | Monday | |
| 20 | C. Leclerc | Sauber | 1:22.721 | Tuesday | |
| 21 | M. Ericsson | Sauber | 1:23.408 | Monday | |
| 22 | N. Mazepin | Force India | 1:25.628 | Monday | |
The table below shows how many laps each driver did across the four-day test. Toro Rosso's Pierre Gasly completed the most on 229 with Ferrari's Sebastian Vettel close behind with 218.
Force India's Nikita Mazepin completed the fewest, but the young Russian was only scheduled for running on Monday, therefore his tally is to be expected, as is Robert Kubica's lowly 49.
Most notably are the two full-time Force India drivers on 65 and 79 for a total of 144 (excluding Mazepin). That gives the Silverstone-based team the lowest mileage by some distance – almost half that of Toro Rosso's 324 laps.
Total laps by driver
As for power units, whilst Honda's 324 laps might look small in comparison to Ferrari's 768, the fact it was completed by just one team (Ferrari had three teams) is impressive, especially given Honda's previous reliability failings with McLaren.
This suggests the Japanese manufacturer has taken a huge step forward with reliability, although a question mark remains over its performance, having also made year-on-year gains in 2016, which, as with 2018, was the second season of its power unit concept.
On a team-by-team average, Honda completed the highest number of laps (324 per team) with Ferrari's average across three teams just 256 laps, 249 for Mercedes and 247 for Renault.
Total laps by team and power unit
