Best fit to data (blue line). Reference gradient (red lines):-8.6ms/day/mbar.
Going varies with pressure because of drag, added mass and buoyancy. Barometric compensator fitted 28 March 2010 should fix this.
- 30 Apr 2011 [18:15]
- Barometric compensator seems to have worked pretty well recently [link] [link] as has the temperature compensation [link] [link] . There is a lot noise on these plots, pretty sure this is due to temperature gradients in the clock chamber because it seems to be worse when the sun is shining strongly through the windows and when the central heating is at its hottest in the room below.