PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-04:42:40
G10     249.7          25.8                8.7 +/-    1.54      16.8 +/-    1.54  0.060 / 0.050
G13     54.7           30.7                5.5 +/-    0.94       9.5 +/-    0.94  0.040 / 0.050
G15     88.5           57.6                5.6 +/-    0.79       6.5 +/-    0.79  0.130 / 0.530
G16     296.0          15.7                4.6 +/-    2.99      11.2 +/-    2.99  0.120 / 0.780
G20     292.8          66.8                5.6 +/-    0.59       6.1 +/-    0.59  0.070 / 0.130
G21     331.9          59.2                5.7 +/-    0.98       6.5 +/-    0.98  0.070 / 0.150
G26     267.4          16.1                9.2 +/-    3.66      22.2 +/-    3.66  0.080 / 0.110
G29     164.9          51.7                6.3 +/-    0.80       7.8 +/-    0.80  0.080 / 0.140