I have poured through the documentation and forums but can’t find anything on this. When I run a test through web interface, I do not see the Speed Index on the metrics: http://www.webpagetest.org/result/120921_FH_JRS/
But on other public tests I do see it: http://www.webpagetest.org/result/120920_69_8F0/
Is there something in the setup?
Any help much appreciated!
Kevin