On this page below you can find the list of IID values used on the Software / Installed Programs page.  The values are indicated both in decimal and hexadecimal (marked with "h").

• 1281 (0501h): Version
• 1282 (0502h): Inst. Size
• 1283 (0503h): GUID
• 1284 (0504h): Publisher
• 1285 (0505h): Inst. Date