cannot render a line chart

Steps to Reproduce

1. load the attached file

Current Result

no chart rendered and the processing message keeps showing

the server can't respond,  need to reload the page

Expected Result

render a line chart like

Debug Information

• HighchartsAxisHelper.setupAxis()

                  do {
                      tick -= size;
                  } while (low < (tick + size));
  

  size is -1 which produces an infinite loop.

• Excel treats NA as 0

Workaround

replace NA with 0 in G80:I82