I managed to keep track of where my ISK came from for another month, as I did in December when I posted about PI.
Then my main source of income was running Sites and it still is, but 71% became 46%. Quite a drop, but it's partially due to not having as much time to play EVE this month.
22% from PI became 35%. Running sites less is part of that, but I also have a 3rd character doing PI, where back then I only had two. Still a good earner though, either way.
A mate and I had a bit of a break from the constant d-scan mashing that is wormhole life, and 10% of my income came from level 4 Missions as you can see on the chart.
No selling gas this month (as I was for part of December). We've been turning it all into polymers via Reactions . 6% from those, and the final 3% is from Hacking two sites.
I doubt I'll keep tracking my income like this for long, but it's good to have an idea where ISK is coming from, and what areas to focus on.