PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-03:58:00
G08     263.1          16.5               10.2 +/-    1.99      24.5 +/-    1.99  0.310 / 0.370
G10     68.5           56.6                4.5 +/-    0.93       5.2 +/-    0.93  0.230 / 0.330
G11     308.5          19.8                8.6 +/-    2.52      19.0 +/-    2.52  0.040 / 0.070
G14     273.2          66.7                7.0 +/-    1.19       7.5 +/-    1.19  0.040 / 0.050
G18     310.1          35.0                7.0 +/-    2.01      11.1 +/-    2.01  0.030 / 0.040
G20     86.0           53.6                9.7 +/-    0.55      11.8 +/-    0.55  0.030 / 0.030
G21     155.6          12.5                5.6 +/-    1.72      14.8 +/-    1.72  0.140 / 0.320
G27     229.0          13.3                6.9 +/-   22.85      17.9 +/-   22.85  0.100 / 0.310
G31     175.7          36.4                9.8 +/-    0.92      15.2 +/-    0.92  0.110 / 0.450
G32     357.3          71.2                6.4 +/-    0.80       6.7 +/-    0.80  0.130 / 0.390