triple suns/sun dogs

there is a really simple explination at:
http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/opt/ice/sd.rxml

--- In , "piconnect2000"
<piconnect2000@y...> wrote:
>
> there is a really simple explination at:
> http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/opt/ice/sd.rxml


I now understand what these things are, but now I wonder whether they are a
local occurrence, like a rainbow, or are they visible over large areas. I suspect
they are local, as otherwise surely there would be more mention of them.