Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Driver | Constructor | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Stirling Moss | Cooper - Climax | 80.0 | 2:19:33.7 | 7.0 |
| Luigi Musso | Ferrari | 80.0 | +2.7 secs | 5.0 |
| Mike Hawthorn | Ferrari | 80.0 | +12.6 secs | 2.0 |
| Juan Manuel Fangio | Maserati | 80.0 | +53.0 secs | 1.0 |
| Jean Behra | Maserati | 78.0 | +2 Laps | 4.0 |
| Harry Schell | Maserati | 77.0 | +3 Laps | 8.0 |
| Carlos Menditeguy | Maserati | 76.0 | +4 Laps | 6.0 |
| Paco Godia | Maserati | 75.0 | +5 Laps | 9.0 |
| Horace Gould | Maserati | 71.0 | +9 Laps | 10.0 |
| Peter Collins | Ferrari | 0.0 | Halfshaft | 3.0 |
Question:
What's the average Grid for a Maserati with less than 80 laps, and a Time/Retired of +2 laps?
Answer:
4.0