Where to insert Analytics code

[gnrx]

Hello.
I have activated, from a since years ago, Analytics for my site.
Always, I view that, the values indicate analytics about unique visitors are not the same that my awstat of other metrics from my cpanel.
I use cloudflare since a few weeks, and also, I view that the anaylitics indicate cloudflare are higher than google analytics, and are the same that my awstats of my cpanel.
Then, I think I don't have in correct place insert the code of google analytics, I have this code in template "headinclude".
Do you know if it is better to insert it in another or other places?

Thanks and regards.