PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-07:27:50
G08     270.2          18.3                6.6 +/-    1.37      15.1 +/-    1.37  0.050 / 0.070
G10     59.3           58.8                5.2 +/-    0.52       6.0 +/-    0.52  0.050 / 0.070
G14     260.0          61.8                5.0 +/-    0.91       5.6 +/-    0.91  0.090 / 0.240
G18     313.1          30.3                6.4 +/-    3.40      11.1 +/-    3.40  0.090 / 0.200
G20     98.7           28.1                4.0 +/-    1.08       7.4 +/-    1.08  0.110 / 0.230
G21     154.7          16.8                4.0 +/-    3.23       9.6 +/-    3.23  0.090 / 0.240
G24     39.9           10.2                2.8 +/-    2.29       7.7 +/-    2.29  0.130 / 0.230
G27     232.3          16.4                5.9 +/-    2.32      14.2 +/-    2.32  0.110 / 0.230
G31     176.8          31.3                6.8 +/-    2.80      11.7 +/-    2.80  0.030 / 0.030
G32     342.9          74.2                5.1 +/-    0.62       5.3 +/-    0.62  0.040 / 0.030