PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-17:28:10
G01     312.2          28.6                4.6 +/-    1.38       8.3 +/-    1.38  0.090 / 0.250
G10     98.4           45.2                7.6 +/-    1.09      10.3 +/-    1.09  0.120 / 0.230
G11     291.2          26.7                5.3 +/-    2.53      10.0 +/-    2.53  0.110 / 0.120
G14     337.8          69.6                5.4 +/-    0.44       5.7 +/-    0.44  0.110 / 0.100
G18     113.4          17.2                8.3 +/-    1.55      19.5 +/-    1.55  0.030 / 0.030
G22     307.2          21.0                5.6 +/-    1.78      11.9 +/-    1.78  0.030 / 0.030
G25     89.1           14.5                9.6 +/-    2.73      24.2 +/-    2.73  0.130 / 0.310
G31     171.7          57.5                7.2 +/-    0.72       8.3 +/-    0.72  0.220 / 0.270
G32     28.7           57.2                5.7 +/-    1.16       6.6 +/-    1.16  0.040 / 0.040