PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-17:12:30
G08     300.3          22.8                7.3 +/-    1.45      15.0 +/-    1.45  0.050 / 0.070
G10     349.8          62.1                6.3 +/-    0.61       7.0 +/-    0.61  0.050 / 0.070
G14     222.8          39.0                9.5 +/-    0.71      14.0 +/-    0.71  0.030 / 0.030
G20     52.2           56.7                8.1 +/-    0.41       9.5 +/-    0.41  0.030 / 0.030
G21     141.0          46.0               11.0 +/-    1.03      14.6 +/-    1.03  0.070 / 0.120
G24     60.7           26.0                9.4 +/-    0.65      18.0 +/-    0.65  0.060 / 0.120
G27     267.4          35.2                8.8 +/-    1.18      14.0 +/-    1.18  0.070 / 0.090
G32     231.5          59.3               10.8 +/-    0.80      12.3 +/-    0.80  0.070 / 0.110