the value (traffic) is not match ???

[jet0202ttt]

Hi Howie,
my platform : win32 , iis5, cacti to create rrd file

i use php-weathermap, i can produce the map, but i find
the inbound and outbound value (traffic) on the map between two
point is not match to the original cacti graphic , so , can anyone help
me ...

english is not my main language , i hope you can understand
what i say .... thank you ..