Graphing of times longer than 24 hours

So I used the thread "Convert number to time" to figure out how to convert, say, 930 to 9:30 in large numbers...

=IF(A1<1000,TIMEVALUE(LEFT(A1,1)&":"&RIGHT(EA1,2)),TIMEVALUE(LEFT(A1,2)&":"&RIGHT(A1,2))).

I plan on using this technique to graph some changing measurements (y-axis) over the period of 2 weeks (ends up being about 13,000 numbers). Unfortunately, when I try to graph anything over 24 hours, the lines loop back to the start of the graph. Any ideas on how to tell Excel that these aren't the same x-values?

I've attached a file to look at if I'm too confusing.

Thanks,

Nick