About this measurement
- Method: Sun tracking with mobile app
- Tracker: Maksim Emelianov
- Location: Antalya — Turkey(36.85º, 30.89º)
- Date and Timezone: 2017, Aug 29, GMT+0
- Note: What a beautyful day! :-)
Raw data and spreadsheet
Comparison with predictive models
As with Jon Coxon, the azimuth data has too big of an error margin. So we need to throw it away.
The elevation data follows the shape of the globe prediction, but with a steady distance. This can be possibly explained by a device miscalibration, which is reinforced by the horizont picture showing the horizon -5.1º below eye-level. If wee consider Jon Coxon elevation measurements correct, then Maxim’s device is off by -5.1+0.7 = -4.4º. By correcting that, we get a closer fit:
But still with a steady ~5º distance from the globe curve. Not really sure what to make of that. Worth noting that the globe model is still able to predict the time for sunset there.
The data points more to a round direction than to a flat one, but it’s still not that perfect fit we’re after. Science is made with repeatable, measurable, observable and testable evidence from independent sources. We need more.