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:
| Team | Chassis | Engine | Driver(s) | Sponsor(s) | Rounds |
| --- | --- | --- | --- | --- | --- |
| A. J. Foyt Enterprises | Lola T8700 | Cosworth | A. J. Foyt | Copenhagen -Gilmore | 3-4, 9-10, 13, 15 |
| A. J. Foyt Enterprises | March 86C | Cosworth | Stan Fox | Kerker Exhaust | 3 |
| A. J. Foyt Enterprises | March 86C | Cosworth | Davy Jones (R) | Skoal Classic | 9, 13, 15 |
| A. J. Foyt Enterprises | March 86C | Cosworth | Davy Jones (R) | Copenhagen -Gilmore | 3 |
| A. J. Foyt Enterprises | March 86C | Chevy V6 | George Snider | Calumet Farms | 3 |
| Alex Morales Racing | March 87C | Cosworth | Johnny Rutherford | Vermont American | All |
| American Racing | March 86C | Buick | Jim Crawford | STP /ARS | 3 |
| American Racing | March 86C | Buick | Gordon Johncock | STP /ARS | 3 |
| Arciero Racing | March 87C | Cosworth | Fabrizio Barbazza (R) | Arciero Wines | 1-13, 15 |
| Arciero Racing | March 87C | Cosworth | Ludwig Heimrath (R) | Arciero Wines | 14-15 |
| Arciero Racing | March 85C | Cosworth | Ludwig Heimrath (R) | Arciero Wines | 14-15 |
| Arciero Racing | March 85C | Cosworth | Graham McRae | Arciero Wines | 15 |
| Bettenhausen Motorsports | March 86C | Cosworth | Tony Bettenhausen, Jr. | United Oil / Call Free | 1-5, 7-12 |
| Centerline Wheels | March | Pontiac | Sammy Swindell | Centerline Wheels | 3 |
| Curb | March 87C/ March 86C | Cosworth | Tom Sneva | Skoal | 1-9 |
| Curb | March 87C/ March 86C | Cosworth | John Andretti (R) | Skoal | 10-15 |
| Curb | March 87C/ March 86C | Cosworth | Ed Pimm | Skoal | 3, 9 |
| Dale Coyne Racing | March 86C | Chevy / Cosworth | Dale Coyne | Coyne Racing | 1-2, 4-15 |
| Dick Simon Racing | Lola T8700 | Cosworth | Dick Simon | Soundesign / Mackenzie Financial | 1-10, 13 |
| Dick Simon Racing | Lola T8700 | Cosworth | Wally Dallenbach, Jr. (R) | Menard's | 11 |
| Dick Simon Racing | Lola T8700 | Cosworth | Ludwig Heimrath (R) | Mackenzie Financial | 12 |
| Dick Simon Racing | Lola T8700 | Cosworth | John Richards (R) | Soundesign | 14 |
| Dick Simon Racing | Lola T8700 | Cosworth | Jeff Wood (R) | Soundesign | 15 |
| Dick Simon Racing | Lola T8700 | Cosworth | Ludwig Heimrath (R) | Mackenzie Financial | 1-10 |
| Dick Simon Racing | Lola T8700 | Cosworth | Jeff Wood (R) | Spirit of Wichita | 11-14 |
| Dick Simon Racing | Lola T8700 | Cosworth | Fulvio Ballabio (R) | Burago | 15 |
| Dick Simon Racing | Lola T8600/ T8700 | Cosworth | John Richards (R) | Soundesign / Mackenzie Financial | 5-8 |
| Dick Simon Racing | Lola T8600 | Cosworth | Ian Ashley | Mackenzie Financial | 15 |
| Doug Shierson Racing | March 87C | Cosworth | Al Unser, Jr. | Domino's Pizza | All |
| Galles Racing | March 87C / Lola T8700 | Judd / Cosworth | Jeff MacPherson | MacHoward Leasing | All |
| Galles Racing | March 87C | Judd | Geoff Brabham | Team Valvoline | All |
| Gohr Racing | March 86C | Cosworth | Rocky Moran | Genesee Beer Wagon | 1 |
| Gohr Racing | March 86C | Cosworth | Gary Bettenhausen | Genesee Beer Wagon | 2-4, 9-10 |
| Gohr Racing | March 87C/ March 86C | Cosworth | Scott Goodyear (R) | Genesee Beer Wagon / Rothmans | 6-8, 11-12, 14-15 |
| Granatelli Racing | March 87C | Cosworth | Roberto Guerrero | True Value / STP | 1-12 |
| Granatelli Racing | March 87C | Cosworth | Al Unser | True Value / STP | 13 |
| Granatelli Racing | March 87C | Cosworth | Raúl Boesel | True Value / STP | 14-15 |
| Hemelgarn Racing | March 87C | Cosworth | Arie Luyendyk | Living Well / Provimi Veal | All |
| Hemelgarn Racing | March 87C | Buick | Rich Vogler | KFC / Living Well | 3 |
| Hemelgarn Racing | March 87C | Cosworth | Scott Brayton | Amway / Autostyle Cars | 3, 5-6, 9-10 |
| Hemelgarn Racing | March 86C | Buick | Johnny Parsons | KFC / Living Well | 3 |
| Interscope Racing | PC-16 / March 87C | Chevy A / Cosworth | Danny Ongais | Interscope / Panasonic | 3, 9, 13, 15 |
| Intersport | March 86C | Cosworth | Dominic Dobson | Intersport | 3 |
| JP Racing | March 86C | Cosworth | Spike Gehlhausen | JP Racing | 3 |
| Kraco Racing | March 87C | Cosworth | Michael Andretti | Kraco | All |
| Leader Cards Racing | March 87C | Cosworth | Randy Lewis | Toshiba / Altos/ Oracle/ Western Digital | All |
| Los Angeles Drywall | March 85C | Cosworth | Dick Ferguson | Los Angeles Drywall | 3 |
| Los Angeles Drywall | March 85C | Cosworth | Dick Ferguson | Los Angeles Drywall | 9 |
| Machinists Union Racing | March 87C | Cosworth | Pancho Carter | Hardee's / Machinists Union | 3, 9-15 |
| Machinists Union Racing | March 86C | Cosworth | Chip Robinson | Carteret Savings / Machinists Union | 1, 6, 13 |
| Machinists Union Racing | March 86C | Cosworth | Tom Sneva | Carteret Savings / Machinists Union | 15 |
| Machinists Union Racing | March 87C | Cosworth | Josele Garza | Schaefer/ Machinists Union | All |
| Machinists Union Racing | March 86C | Cosworth | Mike Nish | Schaefer/ Machinists Union | 1-2 |
| Machinists Union Racing | March 86C/ March 87C | Cosworth | Rick Miaskiewicz | Schaefer/ Machinists Union | 5, 7-8, 12 |
| Newman Teamworks | Lola T8600 | Cosworth | Didier Theys (R) | Pepsi / GFE | 1, 11 |
| Newman Teamworks | Lola T8600 | Cosworth | Davy Jones (R) | Pepsi / GFE | 12 |
| Newman/Haas Racing | Lola T8700 | Chevy A | Mario Andretti | Hanna Car Wash | All |
| NFW Racing | March 86C | Cosworth | Graham McRae | NFW | 11-12 |
| Pace Racing | March 87C | Buick | Derek Daly | Schied/ Superior/ MetroLink | 3 |
| Patrick Racing | March 87C | Chevy A | Kevin Cogan | Marlboro | 1-4, 6-15 |
| Patrick Racing | March 87C | Chevy A | Emerson Fittipaldi | Marlboro | All |
| Penske Racing | PC-16 / March 87C | Chevy A | Danny Sullivan | Miller American | All |
| Penske Racing | PC-16 / March 87C | Chevy A | Rick Mears | Pennzoil Z-7 | All |
| Penske Racing | March 86C | Cosworth | Al Unser | Cummins / Holset Turbo | 9-10 |
| Penske Racing | PC-16 | Chevy A | Al Unser | Cummins / Holset Turbo | 15 |
| Penske Racing | March 86C | Cosworth | Al Unser | Cummins / Holset Turbo | 3 |
| Porsche | Porsche | Porsche | Al Unser | Quaker State | 14 |
| Porsche | Porsche | Porsche | Al Holbert | Quaker State | 15 |
| Raynor | Lola T8700 | Cosworth | Dennis Firestone | Raynor Garage Door | 1-3 |
| Raynor | Lola T8600 | Cosworth | Phil Krueger | Raynor Garage Door | 3 |
| Raynor | Lola T8700 | Cosworth | Derek Daly | Raynor Garage Door | 4-15 |
| Truesports | Lola T8700 | Cosworth | Bobby Rahal | Budweiser | All |
| Truesports | Lola T8700 | Cosworth | Didier Theys (R) | Budweiser | 15 |
| United Oil | March 87C | Cosworth | Steve Chassey | United Oil / Life of Indiana | 3 |
| Walther | March 86C | Cosworth | Rocky Moran | Walther | 3 |
| WENS | March 86C | Cosworth | Rick Miaskiewicz | Pizza Hut / WENS | 3 |
Question:
Which rounds did the team Walther participate in?
Answer:
3.0