PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-08:27:50
G08     266.1          16.3                4.7 +/-   12.51      11.4 +/-   12.51  0.040 / 0.050
G10     68.3           56.8                5.4 +/-    0.58       6.3 +/-    0.58  0.040 / 0.050
G11     309.5          18.7                3.5 +/-    1.43       8.0 +/-    1.43  0.150 / 0.300
G14     269.2          64.4                4.2 +/-    0.43       4.6 +/-    0.43  0.130 / 0.300
G18     310.4          34.3                4.2 +/-    0.97       6.8 +/-    0.97  0.120 / 0.390
G20     104.9          18.6                4.7 +/-    1.12      10.7 +/-    1.12  0.110 / 0.260
G21     155.4          11.9                4.5 +/-    2.04      12.0 +/-    2.04  0.470 / 0.410
G27     228.6          13.1                3.4 +/-    3.99       9.0 +/-    3.99  0.360 / 0.460
G31     175.8          36.4                5.3 +/-    1.25       8.2 +/-    1.25  0.140 / 0.210
G32     357.1          71.2                5.6 +/-    0.42       5.9 +/-    0.42  0.150 / 0.170