PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-17:28:10
G08     281.0          23.2                7.5 +/-    2.10      15.2 +/-    2.10  0.070 / 0.170
G10     30.3           62.3                6.1 +/-    0.40       6.8 +/-    0.40  0.080 / 0.150
G14     240.1          55.6                7.4 +/-    0.73       8.8 +/-    0.73  0.030 / 0.040
G18     316.8          21.2                5.9 +/-    1.93      12.5 +/-    1.93  0.030 / 0.040
G20     78.3           46.5                6.9 +/-    0.40       9.1 +/-    0.40  0.070 / 0.060
G21     150.1          27.5                6.8 +/-    1.13      12.6 +/-    1.13  0.070 / 0.070
G24     45.6           17.2                6.7 +/-    0.66      15.8 +/-    0.66  0.080 / 0.130
G27     247.4          26.6                8.6 +/-    3.40      16.3 +/-    3.40  0.080 / 0.120
G31     184.0          12.1                8.7 +/-    2.57      23.0 +/-    2.57  0.090 / 0.140
G32     270.2          73.6                7.6 +/-    0.61       7.9 +/-    0.61  0.120 / 0.130