
I edited a little bit, as per discussion. Don't know if it is more proper to edit post or make new post, also, might have undersized.
Feel free to suggest changes.
Is that y-axis difficulty or hashrate? I think that 10 Petahash/s is a solid estimate for the beginning of January, if it's difficulty you might be overshooting some.
Edit: looking at the value for 8/24 makes it clear to me that you're measuring hashrate.