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:
| Rd. | Race | Pole position | Fastest lap | Most laps led | Winning driver | Winning team | Report |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | St. Petersburg | Will Power | Hélio Castroneves | Dario Franchitti | Dario Franchitti | Chip Ganassi Racing | Report |
| 2 | Barber | Will Power | Scott Dixon | Will Power | Will Power | Team Penske | Report |
| 3 | Long Beach | Will Power | Dario Franchitti | Ryan Briscoe | Mike Conway | Andretti Autosport | Report |
| 4 | São Paulo | Will Power | Simona de Silvestro | Will Power | Will Power | Team Penske | Report |
| 5 | Indianapolis | Alex Tagliani | Dario Franchitti | Scott Dixon | Dan Wheldon | Bryan Herta Autosport | Report |
| 6A | Texas | Alex Tagliani | E. J. Viso | Dario Franchitti | Dario Franchitti | Chip Ganassi Racing | Report |
| 6B | Texas | Tony Kanaan | Scott Dixon | Will Power | Will Power | Team Penske | Report |
| 7 | Milwaukee | Dario Franchitti | Dario Franchitti | Dario Franchitti | Dario Franchitti | Chip Ganassi Racing | Report |
| 8 | Iowa | Takuma Sato | Alex Tagliani | Dario Franchitti | Marco Andretti | Andretti Autosport | Report |
| 9 | Toronto | Will Power | Justin Wilson | Will Power | Dario Franchitti | Chip Ganassi Racing | Report |
| 10 | Edmonton | Takuma Sato | Sébastien Bourdais | Will Power | Will Power | Team Penske | Report |
| 11 | Mid-Ohio | Scott Dixon | Scott Dixon | Scott Dixon | Scott Dixon | Chip Ganassi Racing | Report |
| 12 | New Hampshire | Dario Franchitti | Scott Dixon | Dario Franchitti | Ryan Hunter-Reay | Andretti Autosport | Report |
| 13 | Sonoma | Will Power | Will Power | Will Power | Will Power | Team Penske | Report |
| 14 | Baltimore | Will Power | Will Power | Will Power | Will Power | Team Penske | Report |
| 15 | Motegi | Scott Dixon | Giorgio Pantano | Scott Dixon | Scott Dixon | Chip Ganassi Racing | Report |
| 16 | Kentucky | Will Power | Ed Carpenter | Dario Franchitti | Ed Carpenter | Sarah Fisher Racing | Report |
Question:
How many winning drivers are there when the winning team is Bryan herta autosport?
Answer:
1.0