PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/24-12:13:00
G10     242.4          18.7                5.5 +/-    2.18      12.4 +/-    2.18  0.040 / 0.030
G13     65.2           35.3                3.4 +/-    0.75       5.4 +/-    0.75  0.040 / 0.040
G15     104.7          56.3                4.8 +/-    0.40       5.7 +/-    0.40  0.040 / 0.050
G16     308.0          13.6                1.1 +/-    2.20       2.8 +/-    2.20  0.040 / 0.050
G20     30.0           62.1                3.3 +/-    0.38       3.7 +/-    0.38  0.090 / 0.390
G21     325.7          55.7                2.6 +/-    0.47       3.0 +/-    0.47  0.070 / 0.430
G26     278.9          18.8                3.8 +/-    0.99       8.6 +/-    0.99  0.040 / 0.030
G29     159.8          59.1                5.7 +/-    0.58       6.5 +/-    0.58  0.030 / 0.030