PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-07:58:10
G10     252.6          28.0                6.0 +/-    1.66      11.0 +/-    1.66  0.110 / 0.400
G13     51.8           29.0                6.1 +/-    1.85      10.9 +/-    1.85  0.100 / 0.560
G15     80.0           56.2                7.1 +/-    1.11       8.4 +/-    1.11  0.040 / 0.040
G16     293.4          15.1                2.9 +/-    2.88       7.1 +/-    2.88  0.050 / 0.040
G20     19.7           65.1                4.7 +/-    0.73       5.2 +/-    0.73  0.030 / 0.030
G21     337.7          62.3                5.4 +/-    0.57       6.0 +/-    0.57  0.040 / 0.030
G26     264.7          14.6                5.7 +/-    0.83      14.2 +/-    0.83  0.030 / 0.040
G29     165.3          46.9                9.1 +/-    0.56      12.0 +/-    0.56  0.040 / 0.050