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:
| Name (year commissioned) | Owner/operator | Length | Maximum diameter | From/to | Licence number |
| --- | --- | --- | --- | --- | --- |
| Dampier to Bunbury Natural Gas Pipeline (1984) | Dampier Bunbury Pipeline | 1,530km | 660 mm | Dampier to Bunbury | PL 40 |
| Goldfields Gas Transmission Pipeline (1996) | GGT Joint venture (APA Group & Others) | 1,426km | 400 mm | Near Compressor Station 1 to Kalgoorlie | PL 24 |
| Parmelia Pipeline (1971) | APA Group | 416 km | 356 mm | Dongara to Pinjarra | PL 1 |
| Pilbara Energy Pipeline (1996) | Epic Energy | 215 km | 450 mm | Karratha to Port Hedland | PL 22 |
| Mid West Gas Pipeline (1999) | APA Group and Western Power | 352 km | 219 mm | Geraldton to Windimurra | PL 43 |
| Kambalda Esperance Pipeline (2003) | Esperance Pipeline Co | 340 km | 150 mm | Kambalda to Esperance | PL 59 |
| Telfer Pipeline (2003) | APA Group & EII | 443 km | 250 mm | Port Hedland to Telfer | PL 60 |
Question:
What is the maximum diameter of the Mid West Gas Pipeline (1999)?
Answer:
219 mm