Correction: García-Balboa, J.L., et al. A Field Procedure for the Assessment of the Centring Uncertainty of Geodetic and Surveying Instruments. Sensors 2018, 18, 3187

1. Change in Equations

The authors wish to make the following corrections to Equations (4) and (5):

$${\alpha }_i=x_{i,2}-x_{i,1},{\beta }_j=x_{i,3}-x_{i,2}.$$

(4)

$$s_{\alpha }=\frac{{{\displaystyle \sum }}_{j=1}^n\left({\alpha }_j-\overline{\alpha }\right)}{n-1},s_{\beta }=\frac{{{\displaystyle \sum }}_{j=1}^n\left({\beta }_j-\overline{\beta }\right)}{n-1}$$

(5)

should be replaced with

$${\alpha }_i=x_{i,2}-x_{i,1},{\beta }_i=x_{i,3}-x_{i,2}.$$

(4)

$$s_{\alpha }=\sqrt{\frac{{{\displaystyle \sum }}_{i=1}^n{\left({\alpha }_i-\overline{\alpha }\right)}^2}{n-1}},s_{\beta }=\sqrt{\frac{{{\displaystyle \sum }}_{i=1}^n{\left({\beta }_i-\overline{\beta }\right)}^2}{n-1}}$$

(5)

The authors would like to apologize for any inconvenience caused to the readers by these changes.