PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-15:58:00
G08     270.8          18.5                8.0 +/-    1.74      18.3 +/-    1.74  0.040 / 0.040
G10     57.3           59.4                6.0 +/-    0.91       6.8 +/-    0.91  0.040 / 0.060
G11     313.9          14.4                5.9 +/-    1.71      14.9 +/-    1.71  0.080 / 0.290
G14     262.3          64.2                7.9 +/-    0.93       8.7 +/-    0.93  0.090 / 0.250
G21     153.4          14.1               11.1 +/-    3.09      28.3 +/-    3.09  0.130 / 0.200
G24     40.7           12.0                5.9 +/-    1.44      15.7 +/-    1.44  0.190 / 0.220
G27     232.1          16.6               10.3 +/-    2.08      24.7 +/-    2.08  0.180 / 0.350
G31     178.6          28.7               10.4 +/-    1.32      18.7 +/-    1.32  0.190 / 0.380
G32     334.1          74.7                7.4 +/-    0.57       7.6 +/-    0.57  0.150 / 0.190