PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-19:12:40
G10     263.0          36.0               12.0 +/-    1.14      18.6 +/-    1.14  0.140 / 0.260
G13     43.8           20.9               10.0 +/-    1.37      21.5 +/-    1.37  0.170 / 0.370
G15     67.7           54.9               10.2 +/-    0.46      12.2 +/-    0.46  0.040 / 0.040
G16     282.5          13.4                9.7 +/-    1.94      25.2 +/-    1.94  0.040 / 0.050
G20     290.5          58.5               12.3 +/-    1.25      14.2 +/-    1.25  0.250 / 0.440
G21     356.2          69.7               11.8 +/-    0.45      12.5 +/-    0.45  0.250 / 0.460
G24     120.6          12.4               13.7 +/-    2.89      36.2 +/-    2.89  0.070 / 0.270
G27     320.8          14.6                8.6 +/-    2.85      21.5 +/-    2.85  0.070 / 0.240
G29     167.3          35.4               11.6 +/-    1.06      18.2 +/-    1.06  0.110 / 0.370