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Plot and as with

Best fit to data (blue line). Reference gradient (red lines):-583ms/day/mrad.
Going will vary with amplitude because sin(θ) ≉ θ

Comments (see all | edit)

17 May 2009 [00:00]
... and why has it suddenly changed back at midnight? There is no change in anything else - some physics not accounted for here!
14 May 2009 [23:30]
What caused this gradual change in going, over 8 hours before and after midnight?
12 May 2009 [12:05]
clock wound at 1.05pm. temp is stable and going seems to be spot on zero. Might this last until October now?

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Interval between data points: seconds [either 3 seconds (weather data is duplicated) or multiples of 60 seconds (all data is averaged)].

Contact:, Trinity College, Cambridge