PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-01:12:40
G08     314.0          15.9                7.7 +/-    2.13      18.7 +/-    2.13  0.050 / 0.070
G10     331.2          60.0               10.1 +/-    0.41      11.5 +/-    0.41  0.060 / 0.070
G14     216.7          28.1               14.4 +/-    2.07      26.3 +/-    2.07  0.040 / 0.050
G15     46.6           11.7                7.0 +/-    4.44      18.9 +/-    4.44  0.040 / 0.050
G20     33.2           61.2                9.1 +/-    0.55      10.2 +/-    0.55  0.190 / 0.220
G21     132.2          59.7               13.2 +/-    0.46      15.1 +/-    0.46  0.190 / 0.220
G24     77.0           30.4                9.3 +/-    1.14      16.2 +/-    1.14  0.420 / 0.180
G27     278.3          37.8               11.7 +/-    0.88      17.6 +/-    0.88  0.420 / 0.290
G32     221.0          49.4               14.2 +/-    1.94      18.1 +/-    1.94  0.070 / 0.070