PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-03:57:50
G03     245.6          68.6                4.5 +/-    1.03       4.8 +/-    1.03  0.050 / 0.040
G09     304.8          22.9                3.4 +/-    2.16       7.0 +/-    2.16  0.040 / 0.040
G14     98.7           15.5                3.9 +/-    1.67       9.7 +/-    1.67  0.100 / 0.330
G16     125.4          58.4                5.5 +/-    0.59       6.4 +/-    0.59  0.130 / 0.310
G22     197.7          57.1                5.4 +/-    0.62       6.2 +/-    0.62  0.050 / 0.070
G23     317.5          47.2                4.6 +/-    0.66       6.0 +/-    0.66  0.060 / 0.060
G26     70.1           51.6                3.2 +/-    0.55       4.0 +/-    0.55  0.040 / 0.050
G31     51.8           20.2                3.5 +/-    3.97       7.6 +/-    3.97  0.030 / 0.050