PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-14:27:30
G08     317.9          13.2                2.9 +/-    1.16       7.4 +/-    1.16  0.050 / 0.070
G10     313.9          56.3                2.3 +/-    0.73       2.8 +/-    0.73  0.060 / 0.080
G14     214.0          21.1                6.4 +/-    1.73      13.6 +/-    1.73  0.030 / 0.040
G15     45.6           17.2                3.1 +/-    0.67       7.4 +/-    0.67  0.040 / 0.030
G20     77.8           14.9                3.8 +/-    2.22       9.4 +/-    2.22  0.060 / 0.090
G21     123.3          62.4                6.4 +/-    0.38       7.1 +/-    0.38  0.060 / 0.120
G24     86.2           29.8                6.0 +/-    0.49      10.6 +/-    0.49  0.080 / 0.250
G27     286.0          37.8                4.3 +/-    1.06       6.5 +/-    1.06  0.060 / 0.200
G32     216.4          43.1                6.6 +/-    0.70       9.1 +/-    0.70  0.030 / 0.040