PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-19:13:10
G03     216.9          62.0                9.8 +/-    1.35      10.9 +/-    1.35  0.040 / 0.040
G07     254.4          15.6               10.0 +/-    1.77      24.5 +/-    1.77  0.040 / 0.050
G09     307.9          24.5                9.1 +/-    1.19      17.9 +/-    1.19  0.040 / 0.030
G16     117.1          63.4               10.4 +/-    0.51      11.5 +/-    0.51  0.040 / 0.030
G22     189.5          45.7                9.3 +/-    0.50      12.4 +/-    0.50  0.070 / 0.190
G23     324.2          54.2               10.0 +/-    0.55      12.0 +/-    0.55  0.070 / 0.280
G26     63.2           51.4                8.0 +/-    1.22      10.0 +/-    1.22  0.080 / 0.110
G31     55.5           16.9                8.2 +/-    2.19      19.4 +/-    2.19  0.100 / 0.140