PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-19:27:30
G01     318.6          20.4                6.2 +/-    2.11      13.4 +/-    2.11  0.040 / 0.050
G08     257.4          13.5                9.5 +/-    3.33      24.4 +/-    3.33  0.040 / 0.040
G10     81.1           51.2                7.1 +/-    0.77       8.8 +/-    0.77  0.120 / 0.370
G11     305.8          20.4                7.2 +/-    1.20      15.7 +/-    1.20  0.170 / 0.270
G14     284.1          67.8                9.8 +/-    0.36      10.5 +/-    0.36  0.050 / 0.070
G20     106.7          26.4                8.0 +/-    1.26      15.2 +/-    1.26  0.040 / 0.070
G31     175.6          41.9               10.6 +/-    0.65      15.0 +/-    0.65  0.040 / 0.040
G32     11.1           66.7                8.0 +/-    0.47       8.7 +/-    0.47  0.050 / 0.040