Sorry to say but most IRI experts (most, not all) predict only when the ticket is sure to confirm or not confirm or when its in RAC. Eg you post a tricky pnr 1 month before and you will see only 3-4 predictions. No one will predict when you need their opinion the most. Only in the last 2-3 days and on the last day the number will rise to 20-30-50 predictions. So I dont go by these numbers and accuracy at all. This is the bitter truth here which no one will discuss.