PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-15:57:50
G03     223.7          66.0               10.8 +/-    0.74      11.7 +/-    0.74  0.170 / 0.260
G09     304.5          19.2                8.9 +/-    2.27      19.9 +/-    2.27  0.240 / 0.330
G14     100.7          15.5                9.1 +/-    2.41      22.3 +/-    2.41  0.030 / 0.030
G16     119.9          60.9                9.4 +/-    0.61      10.5 +/-    0.61  0.040 / 0.030
G22     188.5          50.0               10.3 +/-    0.74      13.0 +/-    0.74  0.040 / 0.060
G23     324.6          54.3                9.2 +/-    0.67      11.1 +/-    0.67  0.050 / 0.050
G26     63.9           49.2                8.7 +/-    0.55      11.1 +/-    0.55  0.030 / 0.060
G31     54.0           16.2                7.3 +/-    2.79      17.5 +/-    2.79  0.040 / 0.050