If you do that on any mining device that internally has more then one dev, you need to add up all the devs to get the summary amount.
My custom monitor is on windows and linq makes it trivial to pull the non null/empty values from the API response and average them out (though I just tend to list the values for each).
Saying that, with the new S3 API, it throws up a wierd character on chain_acs11 (also seen it on chain_acs10). It keeps changing though ... here's a screenshot of it in putty (my monitor is currently in debug mode but will post how it manifests on the form when I am up and running again).
http://s11.postimg.org/n67k0lqjn/S3_Gremlin.png
EDIT: Here's the gremlin in my monitor!
http://s2.postimg.org/87zo87th5/S3_Gremlin1.png
But you already know not to display it:
[miner_count] => 2
for tempX, chain_acnX and chain_acsX
i.e. 2 means 0 and 1 for X
of course same for fan:
[fan_num] => 2
for fanX
