Plot of the electricity generation at the Te Ahi O Maui (25 MW) geothermal power station at Kawerau. Half-hourly data are grouped daily and plotted as magenta (max-upper quartile), green (min-lower quartile), red (median), pale blue (daily average) stepwise dark blue (weekly average), black step (annual averages), black line (overall average). Data from the Electricity Commission/authority and Gnash (available through https://www.dropbox.com/scl/fo/ybht00jahx8mzto4jrzkk/h?rlkey=jyosqn7mp34vqyf40s4triub6&dl=0), and plotted via Octave and a screengrab because print -dpng (or svg) damages both the on-screen image and the resulting .png file.

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