PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-14:27:40
G01     318.8          19.1                4.4 +/-    2.06       9.9 +/-    2.06  0.070 / 0.140
G08     255.0          12.8                5.1 +/-    1.42      13.3 +/-    1.42  0.090 / 0.120
G10     81.7           51.8                5.0 +/-    0.92       6.2 +/-    0.92  0.050 / 0.040
G11     301.2          24.2                4.1 +/-    1.00       8.1 +/-    1.00  0.040 / 0.040
G14     302.3          71.5                4.3 +/-    0.39       4.6 +/-    0.39  0.130 / 0.170
G18     301.1          44.4                5.9 +/-    2.10       8.0 +/-    2.10  0.130 / 0.160
G20     106.3          28.2                7.5 +/-    1.38      13.7 +/-    1.38  0.050 / 0.060
G22     301.8          12.6                4.1 +/-    2.14      10.8 +/-    2.14  0.090 / 0.130
G31     178.8          39.9                6.9 +/-    0.92      10.1 +/-    0.92  0.030 / 0.030
G32     1.7            68.6                4.4 +/-    0.56       4.7 +/-    0.56  0.040 / 0.040