Why is the graph so funky looking? (Highstocks)

Why is the graph so funky looking? (Highstocks)

Hi everyone,

I am trying to figure out why the graph in this example looks so funky: 


I can't seem to figure it out. I am thinking it must be the way I provide the data.
The data is :

  1. [[1362919200,38867.69],[1363003200,38996.34],[1363090680,39119.47]...]
where the first value in each array is a Unix time stamp and the second is the data.

Also the date does not seem to be read in properly.

Thank you for any tips and help in advance!