Hello commanders o7
I grouped all kind of information regarding how much Credits you can earn per activity per hour in this website as well as this post: EDLIB Credits
Let me know if the data is not accurate.
Activity Average Units per Hour Credits earned per Hour
Exploration 20 - 30 systems 15,000,000
PVE Combat (Human ships) with Missions included n/a - stacking missions while bounty hunting 200,000,000
High Conflict Zones (on Foot) n/a 70,000,000 
Thargoid Combat (Cyclops) 4 - 5 kills 36,000,000
Thargoid Combat (Basilisk) 4 kills 96,000,000
Laser Mining Painite @ 300k each  250-ish Painite  60,000,000 
Laser Mining Platinum @ 290k each  875 Platinum  250,000,000 
Mining (Deep Core) @ 700k average 30x Musgravite, 30x Void Opals, 30x Alexandrite 63,000,000
Passenger Missions (Robigo) @ Maximum Reputation 5 - 6 trips back and forth 90,000,000
Trading / Hauling Example: Bauxite and Gallite between Bandizel and Gaunab 84,000,000
 the time travelling to a station, selling it and go back to mining is not being taken into account, meaning the Credits per Hour ratio might decrease
 tag as much enemies as you can so you get the combat bond when they die; once the CZ is over, relog so you can pick a side and repeat the CZ; in all fairness, you can easily reach more than 70M per hour; look for High CZs and also settlements with the +++ sign (the more + the better it is in terms of combat bonds’ worth)
How can you help?
Is this table somewhat accurate? Is it off by a lot? If you can leave your comment with better statistics, I would appreciate it and I will update it accordingly.
Also, if I’m missing any other activity let me know just as well!
Thanks commanders o7