Normal temp for Flint 2 Mt6000?

Related topic - I have been trying to get the luci-app-statistics graphs to show thermals as in this forum thread and while I got the cpu load and wireless graphs, I am struggling with the cpu temp graph.

I have installed the following plugins as mentioned in that thread:
luci-app-statistics
collectd
mod-sensors

But in the Luci Statistics Setup page there were no sensors listed to select. Then I did some more Googling and installed collectd-mod-thermal, which although also does not list any sensors to select in the setup, does display a new Thermal tab with a graph titled 'Temperature of Therm Zone 0'. I am not certain if this reflect the cpu temperature or perhaps some other sensor inside the case.

In any event, I cannot replicate the graphs of the various sensors as shown in my example link above. Also, if I go into the terminal CLI and check for sensors, it says none found:

root@GL-MT6000:~# sensors
No sensors found!
Make sure you loaded all the kernel drivers you need.
Try sensors-detect to find out which these are.
root@GL-MT6000:~# sensors-detect
No i2c device files found.

What am I doing wrong? How do I show the same temp graphs from the example link?

Thanks!