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. 2015 Apr 29;10(4):e0124696. doi: 10.1371/journal.pone.0124696

Table 6. Correlation between static horizontal position accuracy (as expressed by the root mean squared error of 30 samples) and other metrics of interest when using the Flint GNSS receiver in the deciduous stand.

Status / Metric Holding position
Vertical Angled Horizontal
r p-value r p-value r p-value
Leaf-on conditions
HDOP a 0.019 0.919 -0.127 0.503 -0.206 0.275
VDOP b 0.025 0.895 0.069 0.718 0.114 0.548
PDOP c 0.024 0.900 0.007 0.971 0.061 0.749
Satellites used -0.234 0.213 -0.156 0.410 -0.087 0.649
C/No d -0.010 0.959 -0.237 0.207 0.038 0.843
Air temperature -0.121 0.524 -0.328 * 0.077 -0.143 0.450
Relative humidity 0.157 0.408 -0.213 0.257 0.401 ** 0.028
Atmospheric pressure 0.143 0.452 0.154 0.417 0.074 0.696
Leaf-off conditions
HDOP a 0.025 0.895 0.060 0.752 0.143 0.449
VDOP b -0.333 * 0.072 0.066 0.727 -0.194 0.304
PDOP c -0.262 0.162 0.063 0.741 -0.085 0.655
Satellites used -0.007 0.970 -0.042 0.826 0.227 0.229
C/No d -0.267 0.154 -0.145 0.444 -0.285 0.127
Air temperature 0.058 0.762 0.137 0.470 0.161 0.395
Relative humidity 0.032 0.866 -0.143 0.452 -0.323 * 0.082
Atmospheric pressure -0.359 * 0.051 -0.064 0.736 -0.223 0.236

** Significant at p < 0.05 level

* Significant at p < 0.10 level

a Horizontal dilution of precision

b Vertical dilution of precision

c Positional dilution of precision

d Carrier-to-noise density