Data and processing for fridge/freezer starting 2022-10-07.

Items of note:

  * powerExtractZ.sh extracts just timestamp and "Power" value from input
    and also corrects for the missing Z on the timestamp.




Note workflow for generaton of 'raw' SVG by gnuplot, then manual optimisation:

% cp LBplug-2022-10-07.power.dat input.dat
% gnuplot gnuplot-LB-power-plot-v1.txt
% svgo -i output.raw.svg -o LBplug-2022-10-07.power.svg
% zopfli -c LBplug-2022-10-07.power.svg > LBplug-2022-10-07.power.svggz
% brotli < LBplug-2022-10-07.power.svg > LBplug-2022-10-07.power.svgbr