PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-04:43:10
G03     239.1          67.6                6.5 +/-    0.52       7.0 +/-    0.52  0.040 / 0.060
G09     305.9          24.0                2.9 +/-    1.25       5.8 +/-    1.25  0.040 / 0.050
G14     100.4          14.2                5.0 +/-    1.71      12.5 +/-    1.71  0.110 / 0.300
G16     120.7          59.9                7.2 +/-    1.01       8.2 +/-    1.01  0.110 / 0.290
G22     195.8          54.7                6.5 +/-    1.11       7.8 +/-    1.11  0.040 / 0.070
G23     319.5          49.2                4.2 +/-    0.67       5.3 +/-    0.67  0.040 / 0.050
G26     66.4           50.3                5.6 +/-    0.57       7.0 +/-    0.57  0.040 / 0.060
G31     53.1           18.1                3.2 +/-    1.14       7.4 +/-    1.14  0.050 / 0.070