Today I posted the results of the barograph accuracy evaluation I performed using January 2017 recorded data.  The accuracy was calculated for five barographs:

1. A Belfort 800A microbarograph
2. A Friez 620 barograph
3. A Friez ML-3A microbarograph using 4.5 day charts
4. A Friez ML-3A microbarograph using a 31 day chart that doesn't quite fit the instrument
5. A Weathertronics 7021 barograph

You will find the evaluation under 'Barometric Calculations' on trhe website home page, or use the link below.

See Barograph Accuracy Evaluation - January 2017

​I will repeat this evaluation in April 2017 with March data, with some improvements and perhaps 3 more barographs.