PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/21-03:58:00
G01     316.2          24.7                4.6 +/-    1.23       9.1 +/-    1.23  0.060 / 0.040
G10     90.1           47.7                6.7 +/-    0.86       8.7 +/-    0.86  0.060 / 0.050
G11     297.0          25.1                5.8 +/-    1.71      11.4 +/-    1.71  0.110 / 0.160
G14     315.7          71.2                5.5 +/-    0.69       5.7 +/-    0.69  0.110 / 0.160
G18     297.0          45.6                6.2 +/-    3.28       8.2 +/-    3.28  0.090 / 0.310
G20     110.9          24.6                6.2 +/-    1.07      12.2 +/-    1.07  0.080 / 0.260
G22     304.3          15.0                5.7 +/-    2.25      14.2 +/-    2.25  0.280 / 0.250
G25     96.4           11.0               -9.7 +/-   29.37     -26.5 +/-   29.37  0.210 / 0.290
G31     172.3          50.4                7.5 +/-    0.70       9.5 +/-    0.70  0.050 / 0.050
G32     16.6           63.6                4.9 +/-    0.47       5.4 +/-    0.47  0.040 / 0.050