PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-03:12:50
G08     311.1          17.9                7.4 +/-    2.11      17.2 +/-    2.11  0.060 / 0.070
G10     335.8          60.6                7.3 +/-    0.39       8.2 +/-    0.39  0.060 / 0.070
G14     217.9          31.0               10.1 +/-    2.47      17.4 +/-    2.47  0.030 / 0.030
G20     38.2           60.2                7.2 +/-    0.53       8.1 +/-    0.53  0.030 / 0.030
G21     134.8          57.0               10.0 +/-    0.41      11.6 +/-    0.41  0.040 / 0.050
G24     73.7           30.1                7.4 +/-    1.16      12.9 +/-    1.16  0.040 / 0.050
G27     275.3          37.5                8.9 +/-    2.35      13.5 +/-    2.35  0.110 / 0.190
G32     223.1          50.8               11.5 +/-    1.58      14.4 +/-    1.58  0.110 / 0.200