PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-15:42:40
G08     298.2          21.9                5.9 +/-    1.44      12.3 +/-    1.44  0.050 / 0.100
G10     358.2          62.7                6.7 +/-    0.67       7.4 +/-    0.67  0.050 / 0.090
G14     227.0          42.5                9.4 +/-    1.14      13.1 +/-    1.14  0.060 / 0.080
G18     61.4           51.3                7.2 +/-    0.62       8.9 +/-    0.62  0.050 / 0.080
G21     143.8          40.2               10.1 +/-    1.15      14.6 +/-    1.15  0.060 / 0.100
G24     60.3           27.7                5.4 +/-    0.65      10.0 +/-    0.65  0.060 / 0.090
G27     257.0          33.2                7.4 +/-    1.51      12.1 +/-    1.51  0.070 / 0.090
G32     239.8          64.8                9.0 +/-    1.19       9.9 +/-    1.19  0.060 / 0.080