PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-21:42:50
G10     247.2          24.0               12.0 +/-    1.47      24.0 +/-    1.47  0.050 / 0.060
G13     57.3           31.8               10.4 +/-    0.89      17.5 +/-    0.89  0.050 / 0.060
G15     102.2          59.2               12.5 +/-    0.58      14.3 +/-    0.58  0.140 / 0.620
G16     298.0          16.2                8.6 +/-    2.69      20.7 +/-    2.69  0.140 / 0.560
G20     250.0          12.4                5.7 +/-    1.26      15.2 +/-    1.26  0.050 / 0.130
G21     327.5          56.5                9.9 +/-    1.04      11.6 +/-    1.04  0.050 / 0.160
G26     270.1          17.3               10.9 +/-    2.84      25.7 +/-    2.84  0.030 / 0.050
G29     164.0          56.0               12.9 +/-    0.89      15.3 +/-    0.89  0.030 / 0.040