PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-21:57:50
G03     229.4          65.7                5.8 +/-    1.22       6.2 +/-    1.22  0.060 / 0.070
G07     251.0          10.5               -4.3 +/-   19.13     -11.9 +/-   19.13  0.050 / 0.070
G09     307.9          26.9                5.0 +/-    1.38       9.5 +/-    1.38  0.100 / 0.260
G14     101.8          14.7                8.5 +/-    1.13      21.3 +/-    1.13  0.110 / 0.320
G16     112.2          61.1                9.3 +/-    1.48      10.5 +/-    1.48  0.040 / 0.050
G22     194.3          50.5                9.3 +/-    1.55      11.6 +/-    1.55  0.040 / 0.050
G23     322.8          52.7              -13.1 +/-    0.96     -16.1 +/-    0.96  0.160 / 0.310
G26     62.7           48.9                5.6 +/-    0.48       7.2 +/-    0.48  0.120 / 0.380
G31     54.9           16.1                5.8 +/-    1.32      14.1 +/-    1.32  0.040 / 0.040