PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-22:12:50
G01     252.0          35.7                8.7 +/-    0.85      13.7 +/-    0.85  0.030 / 0.050
G03     316.0          42.8                5.2 +/-    1.08       7.2 +/-    1.08  0.040 / 0.050
G11     238.3          13.2               10.9 +/-    2.18      28.4 +/-    2.18  0.060 / 0.100
G14     59.8           41.0                6.0 +/-    1.28       8.5 +/-    1.28  0.070 / 0.110
G22     306.1          64.7                6.1 +/-    0.80       6.7 +/-    0.80  0.030 / 0.040
G23     285.7          18.2                9.0 +/-    1.43      20.6 +/-    1.43  0.040 / 0.040
G25     40.1           10.4                7.5 +/-    1.73      20.6 +/-    1.73  0.150 / 0.360
G26     139.4          36.6               11.8 +/-    1.02      18.1 +/-    1.02  0.110 / 0.300
G31     40.6           61.5                6.4 +/-    0.45       7.2 +/-    0.45  0.040 / 0.100
G32     76.3           24.2                7.6 +/-    0.71      15.1 +/-    0.71  0.050 / 0.090