PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-04:57:50
G03     247.4          68.8                5.5 +/-    1.07       5.8 +/-    1.07  0.030 / 0.050
G09     304.1          21.5                4.9 +/-    1.44      10.4 +/-    1.44  0.050 / 0.050
G14     98.1           16.2                4.1 +/-    2.09       9.9 +/-    2.09  0.130 / 0.300
G16     126.1          58.0                8.6 +/-    0.55      10.0 +/-    0.55  0.100 / 0.270
G22     197.9          57.6                7.0 +/-    0.63       8.1 +/-    0.63  0.040 / 0.060
G23     317.4          47.1                6.3 +/-    0.75       8.3 +/-    0.75  0.060 / 0.050
G26     70.6           51.6                6.0 +/-    0.55       7.4 +/-    0.55  0.030 / 0.050
G31     51.7           20.2                3.6 +/-    3.12       8.0 +/-    3.12  0.040 / 0.040