PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-13:12:30
G01     318.5          19.2                4.6 +/-    2.11      10.4 +/-    2.11  0.040 / 0.040
G08     259.9          12.3                5.6 +/-    1.85      14.8 +/-    1.85  0.040 / 0.040
G10     82.1           52.6                4.6 +/-    0.82       5.6 +/-    0.82  0.080 / 0.210
G11     303.8          22.0                5.5 +/-    1.09      11.5 +/-    1.09  0.080 / 0.220
G14     295.4          69.5                5.7 +/-    0.41       6.0 +/-    0.41  0.050 / 0.060
G22     302.2          14.3                1.5 +/-    1.01       3.7 +/-    1.01  0.050 / 0.050
G31     174.3          45.1                6.7 +/-    0.58       9.0 +/-    0.58  0.040 / 0.040
G32     13.2           65.4                4.1 +/-    0.55       4.5 +/-    0.55  0.040 / 0.040