PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-02:12:40
G10     269.1          40.5               12.0 +/-    1.06      17.3 +/-    1.06  0.100 / 0.100
G13     40.8           16.1                7.1 +/-    3.11      17.2 +/-    3.11  0.130 / 0.120
G15     56.8           46.7               10.5 +/-    0.89      13.8 +/-    0.89  0.100 / 0.040
G16     279.1          11.8               11.4 +/-    1.69      30.5 +/-    1.69  0.100 / 0.030
G20     300.7          60.8               10.8 +/-    0.74      12.1 +/-    0.74  0.050 / 0.040
G21     7.0            72.5               10.8 +/-    0.58      11.3 +/-    0.58  0.040 / 0.040
G24     119.5          15.1               11.1 +/-    2.14      27.6 +/-    2.14  0.230 / 0.490
G27     318.5          19.2                7.3 +/-    1.68      16.5 +/-    1.68  0.270 / 0.450
G29     166.6          28.2               13.0 +/-    0.98      23.7 +/-    0.98  0.150 / 0.330