PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-02:13:10
G10     286.1          47.6               10.9 +/-    3.11      14.1 +/-    3.11  0.070 / 0.090
G15     48.7           37.4                8.7 +/-    1.17      13.2 +/-    1.17  0.090 / 0.100
G20     307.1          58.6               15.9 +/-    0.39      18.3 +/-    0.39  0.050 / 0.040
G21     59.5           77.6               11.4 +/-    0.83      11.7 +/-    0.83  0.040 / 0.040
G24     104.8          23.0               10.3 +/-    0.89      21.1 +/-    0.89  0.070 / 0.120
G27     308.3          30.0                9.5 +/-    1.28      16.6 +/-    1.28  0.080 / 0.120
G29     169.0          16.0               12.0 +/-    2.42      29.1 +/-    2.42  0.050 / 0.060
G32     207.3          25.8               14.2 +/-    1.23      27.3 +/-    1.23  0.070 / 0.060