PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-10:57:40
G02     77.0           17.5                4.3 +/-    0.63      10.0 +/-    0.63  0.040 / 0.050
G05     45.0           41.1                4.1 +/-    0.93       5.9 +/-    0.93  0.030 / 0.060
G12     181.7          13.6                6.4 +/-    2.58      16.4 +/-    2.58  0.060 / 0.130
G13     111.1          28.5                7.1 +/-    0.93      12.9 +/-    0.93  0.070 / 0.160
G15     150.4          29.9                6.8 +/-    2.47      11.9 +/-    2.47  0.100 / 0.250
G18     225.7          21.2                2.6 +/-    1.96       5.6 +/-    1.96  0.050 / 0.270
G20     235.1          77.4                5.2 +/-    0.95       5.3 +/-    0.95  0.040 / 0.040
G21     289.9          32.5                2.8 +/-    1.72       4.6 +/-    1.72  0.040 / 0.040
G25     216.1          34.9                6.5 +/-    0.88      10.4 +/-    0.88  0.050 / 0.100
G29     350.9          77.7                5.9 +/-    0.56       6.0 +/-    0.56  0.060 / 0.110