19th August Weekly pool statistics

Apologies to BitcoinPool and their miners - the pool's website was down today and I was unable to retrieve the weekly data. 

I have had some feedback indicating that 50BTC.com should not be included in the pool hashrate stats due to the unavoidable error caused by the minimal published data the pool makes available. At the current hashrate of 2000 Ghps, the standard error would be +/- 8.8% and will reduce as 50BTC's hashrate increases as a proportion of the network hashrate. Anyone else have any thoughts on the matter?

I've added some more charts, and I've added a guide section for the charts.

If your pool isn't here and you'd like it to be, comment with  a link to a block history with round lengths and either solve times to the nearest second or a timestamp.

Average hashrate:

Average hashrate = Total shares / Total round time

Luck index:

log(% of network blocks solved / % of network hashrate)

Luck index = 0 is average luck

Luck index > 0 is good luck

Luck index < 0 is poor luck

Weekly average round length as a fraction of difficulty:

Average number of shares submitted per round / difficulty

Chart 1: List of all pools with public data and their various statistics averaged for the last seven days - for smaller pools the average may be more or less than seven days, depending on number of blocks solved for the week.
Chart 2: Network hashrate, hashrate of the largest mining pool, combined hashrates of the three largest mining pools, and a line representing 50% of the network hashrate. Handy if you're worried about 51% attacks.
Chart 3: Chronology of pool hashrates, averaged per week.
Chart 4: Average hashrates per pool per round for the week.
Chart 5: Chronology of pool luck indexes, averaged per week.

Chart 6: Chronology of round length divided by difficulty, averaged per week.
Chart 7: Percentage of orphaned blocks produced by the pool, averaged per week.

Chart 8: Hashrate vs round length for hoppable pools (the larger the hashrate increase at the start of a round, the larger the loss to strategic miners).

Highlights:

• It seems that the thought of actually supporting their pool financially had led some Ozcoin miners to leave, losing the pool 300Ghps and 2% of the network hashrate.
• p2Pool still hasn't seen any bad luck for six weeks in a row.
• Deepbit finally gained a little in terms of network hashrate, and has been extremely lucky for the last seven days.
• Hoppable pools apart from Deepbit are being hopped for a significant portion of the initial hashrate.

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