Fig 1. Availability of GFT, ILIf, and ILIp at US national, regional and state levels in the US.

At the regional level, GFT and ILIf were available from 2003, and ILIp were available from 2009/10 season onwards, excluding off-season weeks. For states, ILIp were never available to the public, and ILIf is available from 2011/12 season onwards. Updates to GFT model are indicated by the vertical lines.