Make excel count in multiples of 10 but upto 60

Hello,

I'm trying to create a table showing plus and minus of a minute. 

The baseline being 0. We go up in groups of 10 seconds but I can't seem to make chart stop at 0.5/-0.5 then switch to 1, 1.1 and so on. 

Any help would be appreciated. 

Thank yoy