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Accuracy characteristics of the local quasigeoid model for the city of Krakow
| Number of all points used to construct the model | 66 |
| Number of unknowns | 4 |
| Number of points removed | 4 |
| Final number of points | 62 |
| Residual standard deviation | 0.0062 m |
| Mean absolute residual | 0.0049 m |
| Median absolute residual | 0.0046 m |
| Maximum absolute residual | 0.0140 m |
| Coefficient of determination | 0.8117 |
| 10 largest absolute residuals [m] | 0.0086, 0.0092, 0.0097, 0.0097, 0.0098, 0.0103, 0.0105, 0.0121, 0.0131, 0.0140 |
| Results of cross-validation (Leave-one-out) | |
| Root mean square error | 0.0064 m |
| Mean absolute error | 0.0052 m |
| Median absolute error | 0.0048 m |
| Maximum absolute difference | 0.0144 m |
| Results of Monte Carlo cross-validation (1000-fold removal of 20% of points) | |
| Root mean square error | 0.0064 m |
| Mean absolute error | 0.0053 m |
| Median absolute error | 0.0050 m |
| Maximum absolute difference | 0.0159 m |
Summary statistics of absolute differences between models and GNSS/Levelling derived height anomalies
| Characteristics | National model PL-geoid2011 [m] | Local model QuasigeoidKR2019 [m] |
|---|---|---|
| Minimum | 0.000 | 0.000 |
| First Quartile | 0.007 | 0.002 |
| Median | 0.015 | 0.004 |
| Third Quartile | 0.024 | 0.007 |
| Maximum | 0.044 | 0.014 |
| Mean absolute difference | 0.016 | 0.005 |
First survey campaign – sessions 1–17_ Point selected for second measurement are in bold_ Second measurement – sessions 18–24 (shaded grey)
| Session | Points | ||||
|---|---|---|---|---|---|
| 1 | 4102 | 5201 | 5301 | ||
| 2 | 6301 | 6401 | 7501 | 7601 | 6201 |
| 3 | 3803 | 4902 | 5001 | 5103 | |
| 4 | 1402 | 2501 | 2603 | 2701 | |
| 5 | 5402 | 6503 | 6601 | 7701 | 7801 |
| 6 | 2806 | 3901 | 4001 | BA00 | |
| 7 | 0501 | 1501 | 1603 | 1702 | |
| 8 | 1801 | 1902 | 2902 | 3002 | |
| 9 | 3104 | 4204 | 4303 | 4401 | |
| 10 | 4503 | 4603 | 5701 | ||
| 11 | 4700 | 5802 | 5901 | 7002 | |
| 12 | 6904 | 8201 | 8300 | ||
| 13 | 6801 | 8001 | 8103 | ||
| 14 | 5501 | 5601 | 6704 | ||
| 15 | 9102 | 9301 | 9402 | ||
| 16 | 9604 | 5651 | 9501 | ||
| 17 | 9201 | 9701 | 9901 | 9902 | |
| 18 | 6252 | 6352 | 6451 | 7552 | |
| 19 | 3853 | 4952 | 5051 | BA50 | BA51 |
| 20 | 5351 | 6553 | 6754 | 7852 | |
| 21 | 2653 | 2751 | 2856 | 4051 | |
| 22 | 905A | 905B | 0551 | 1851 | |
| 23 | 3154 | 4553 | 5951 | ||
| 24 | 5753 | 6851 | 8051 | 8251 | |
Post-processing variants
| Software | Solution |
|---|---|
| Leica Geo Office | Network solution, ASG-EUPOS reference stations (KRA1, PROS) |
| GNSS Solutions | Network solution, one ASG-EUPOS reference station (KRA1 or PROS) |
| AUSPOS (internet service) https://www.ga.gov.au | Network solution, EPN/IGS reference stations |
| MagicGNSS (internet service) https://magicgnss.gmv.com | Precise Point Positioning |