PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-03:42:50
G08     271.4          19.9                8.3 +/-    2.51      18.3 +/-    2.51  0.240 / 0.460
G10     52.4           60.0                6.6 +/-    1.02       7.5 +/-    1.02  0.140 / 0.530
G14     255.2          61.3                7.1 +/-    1.28       7.9 +/-    1.28  0.140 / 0.250
G18     314.5          27.7                4.8 +/-    1.99       8.8 +/-    1.99  0.130 / 0.270
G20     72.8           58.1                9.6 +/-    2.31      11.1 +/-    2.31  0.050 / 0.070
G21     154.1          20.8                4.7 +/-    1.08      10.2 +/-    1.08  0.060 / 0.070
G24     41.1           12.2                5.8 +/-    1.74      15.3 +/-    1.74  0.130 / 0.180
G27     235.5          19.1                7.1 +/-    5.34      15.9 +/-    5.34  0.510 / 0.190
G31     177.7          27.4                5.6 +/-    2.11      10.4 +/-    2.11  0.120 / 0.270
G32     329.1          75.9                6.7 +/-    0.62       6.9 +/-    0.62  0.140 / 0.310