PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-20:27:30
G03     231.5          67.5                9.6 +/-    1.48      10.3 +/-    1.48  0.090 / 0.300
G09     303.4          17.6                8.8 +/-    2.33      20.6 +/-    2.33  0.090 / 0.360
G14     100.0          14.8                9.9 +/-    0.93      24.8 +/-    0.93  0.050 / 0.050
G16     128.7          59.4               -0.3 +/-    0.44      -0.4 +/-    0.44  0.080 / 0.050
G22     193.8          54.6               10.2 +/-    1.63      12.2 +/-    1.63  0.030 / 0.040
G23     320.3          50.1                8.8 +/-    0.95      11.1 +/-    0.95  0.040 / 0.040
G26     68.4           51.5                7.7 +/-    0.43       9.6 +/-    0.43  0.030 / 0.040
G31     52.5           19.2                6.1 +/-    0.61      13.7 +/-    0.61  0.030 / 0.030