PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-13:43:00
G03     232.1          67.6                7.4 +/-    0.69       7.9 +/-    0.69  0.120 / 0.350
G09     303.7          18.4                5.8 +/-    1.10      13.4 +/-    1.10  0.140 / 0.380
G14     98.8           17.8                7.9 +/-    1.03      18.3 +/-    1.03  0.050 / 0.060
G16     122.1          59.8                9.0 +/-    1.04      10.2 +/-    1.04  0.050 / 0.060
G22     188.7          51.5                9.0 +/-    0.84      11.1 +/-    0.84  0.040 / 0.050
G23     324.0          53.8                7.1 +/-    1.05       8.6 +/-    1.05  0.040 / 0.050
G26     66.0           49.8                6.4 +/-    0.52       8.1 +/-    0.52  0.040 / 0.060
G31     53.2           17.2                5.3 +/-    1.07      12.6 +/-    1.07  0.040 / 0.050