PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-15:12:30
G08     297.3          21.9                4.9 +/-    1.28      10.3 +/-    1.28  0.060 / 0.130
G10     1.0            62.9                5.0 +/-    0.78       5.6 +/-    0.78  0.060 / 0.090
G14     228.0          43.4                8.5 +/-    0.92      11.7 +/-    0.92  0.040 / 0.030
G21     144.5          39.4                9.1 +/-    1.32      13.4 +/-    1.32  0.030 / 0.030
G24     59.0           27.2                5.2 +/-    0.71       9.7 +/-    0.71  0.050 / 0.080
G27     255.7          32.6                5.3 +/-    1.38       8.8 +/-    1.38  0.040 / 0.080
G32     242.1          66.1                6.7 +/-    0.59       7.2 +/-    0.59  0.050 / 0.100