PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/01-02:28:00
G10     302.8          54.1               12.2 +/-    1.27      14.6 +/-    1.27  0.110 / 0.100
G14     210.6          13.7               16.5 +/-    1.69      42.4 +/-    1.69  0.070 / 0.090
G15     45.7           24.9                8.6 +/-    2.44      16.8 +/-    2.44  0.050 / 0.040
G20     358.2          65.0               12.2 +/-    0.51      13.3 +/-    0.51  0.070 / 0.050
G21     103.2          72.7               13.6 +/-    0.90      14.2 +/-    0.90  0.040 / 0.030
G24     95.2           27.5               20.0 +/-    1.37      37.0 +/-    1.37  0.040 / 0.030
G27     298.6          35.0               10.6 +/-    1.60      16.9 +/-    1.60  0.120 / 0.500
G32     211.7          32.7               15.6 +/-    1.79      25.9 +/-    1.79  0.250 / 0.380