PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-00:12:30
G10     254.5          29.9               10.8 +/-    1.85      18.9 +/-    1.85  0.030 / 0.050
G13     49.7           27.1                5.5 +/-    2.83      10.2 +/-    2.83  0.030 / 0.040
G15     81.5           58.0                7.2 +/-    0.65       8.3 +/-    0.65  0.130 / 0.390
G16     289.7          15.5                8.0 +/-    1.63      19.8 +/-    1.63  0.190 / 0.420
G20     262.8          34.8               10.9 +/-    3.14      17.3 +/-    3.14  0.060 / 0.140
G21     338.1          62.7                8.1 +/-    0.57       9.0 +/-    0.57  0.140 / 0.170
G26     262.1          13.8                7.8 +/-    1.88      19.9 +/-    1.88  0.030 / 0.030
G29     166.3          46.0                8.4 +/-    0.83      11.2 +/-    0.83  0.030 / 0.040