PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-12:42:40
G10     260.0          33.3                4.5 +/-    2.02       7.4 +/-    2.02  0.140 / 0.250
G13     46.0           24.1                4.3 +/-    1.84       8.5 +/-    1.84  0.100 / 0.200
G15     66.0           51.9                5.4 +/-    0.88       6.6 +/-    0.88  0.200 / 0.380
G16     287.7          13.3                4.0 +/-    1.77      10.3 +/-    1.77  0.170 / 0.290
G20     46.9           44.4                4.9 +/-    0.85       6.6 +/-    0.85  0.080 / 0.060
G21     356.2          69.2                4.4 +/-    1.05       4.7 +/-    1.05  0.070 / 0.070
G24     126.6          10.0              -11.2 +/-   25.02     -31.2 +/-   25.02  0.330 / 0.430
G26     259.1          11.0                4.2 +/-    1.93      11.4 +/-    1.93  0.270 / 0.370
G27     320.7          14.5                2.0 +/-    1.93       5.0 +/-    1.93  0.050 / 0.040
G29     166.0          36.1                6.1 +/-    1.15       9.5 +/-    1.15  0.050 / 0.030