FWIW, I computed the correlation coefficient between the "newness" of the moon and ZQ for a few months. I wouldn't think the results are worth posting in themselves, but if anyone is contemplating testing, here's what my spreadsheet said: the CUMULATIVE cc from July to November 2013 varied from -2% to +8%. I ran a new spreadsheet for a month; at the end of that month the cc was -44%. For "newness" I used the LibreOffice Calc (and Excel?) function
=IFERROR(ABS(MOD(DATEDIF("8/7/2013",A6,"d"), 29.5305882) /29.5305882-0.5),"")
where A6 is the current date. (As far as I remember 8 July 2103 was a full moon.)
This is simply a record of something I did out of curiosity, totally unchecked. I don't even know that a continuously variable "newness" is a suitable variable.
I've had total success using disposable ECG electrodes. Can be expensive using fresh electrodes every night, but I have outdated packs, and use electrodes from them for many months after opening, storing in humidors. I can get about 10 days from each set of electrodes (I haven't tried to truly maximize the time, just replace them when I seem to be getting dropouts.) About 2 days with new electrodes, another 4 days with Hypafix tape (better than Micropore or Transpore as more conformable, also cheaper), then, after smearing as little Tensive as possible on each electrode with a finger (once only) I get another 4-6 days. Details (necessary) in post #161; this post updates a few points.
PS I slightly updated post #161 on 15 Feb 14 with later conclusions. Edited to clarify Tensive only applied once.