PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-06:57:30
G03     247.5          68.5                4.6 +/-    0.67       4.9 +/-    0.67  0.040 / 0.050
G09     303.6          19.8                5.1 +/-    3.73      11.2 +/-    3.73  0.040 / 0.070
G14     98.3           16.3                4.3 +/-    2.11      10.3 +/-    2.11  0.120 / 0.390
G16     123.1          58.5                6.4 +/-    0.47       7.4 +/-    0.47  0.090 / 0.350
G22     197.7          57.3                6.1 +/-    1.11       7.0 +/-    1.11  0.040 / 0.060
G23     318.0          47.7                3.5 +/-    0.86       4.5 +/-    0.86  0.060 / 0.070
G26     68.4           50.5                5.8 +/-    0.32       7.2 +/-    0.32  0.040 / 0.060
G31     52.3           18.5                2.2 +/-    1.61       5.0 +/-    1.61  0.040 / 0.050