PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-21:58:00
G10     259.3          32.4               18.3 +/-    2.49      30.5 +/-    2.49  0.050 / 0.070
G13     47.0           25.4               11.6 +/-    1.58      22.5 +/-    1.58  0.040 / 0.060
G15     69.5           54.0               14.9 +/-    0.66      17.9 +/-    0.66  0.070 / 0.080
G16     289.5          13.1               13.3 +/-    1.26      34.6 +/-    1.26  0.090 / 0.090
G18     285.4          61.3               15.1 +/-    1.21      16.9 +/-    1.21  0.190 / 0.360
G20     49.6           40.2               12.3 +/-    1.05      17.8 +/-    1.05  0.170 / 0.320
G21     350.0          67.8               15.1 +/-    0.62      16.2 +/-    0.62  0.130 / 0.250
G26     262.4          11.3               18.0 +/-    2.14      48.8 +/-    2.14  0.090 / 0.210
G27     320.7          14.4               10.9 +/-    1.59      27.5 +/-    1.59  0.040 / 0.070
G29     165.3          35.3               20.0 +/-    0.88      31.5 +/-    0.88  0.050 / 0.090