PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-03:58:00
G08     295.3          22.2                8.5 +/-    1.38      17.8 +/-    1.38  0.130 / 0.140
G10     11.2           62.8                7.0 +/-    1.53       7.8 +/-    1.53  0.070 / 0.090
G14     229.4          46.5                9.7 +/-    2.88      12.8 +/-    2.88  0.050 / 0.020
G18     317.8          10.9               -7.1 +/-   23.70     -19.3 +/-   23.70  0.030 / 0.050
G20     65.6           52.2                7.6 +/-    1.38       9.3 +/-    1.38  0.060 / 0.070
G21     146.9          40.5                9.7 +/-    0.75      13.9 +/-    0.75  0.050 / 0.070
G24     56.0           25.5                7.3 +/-    2.02      14.2 +/-    2.02  0.110 / 0.130
G27     255.0          31.9                9.2 +/-    2.86      15.4 +/-    2.86  0.140 / 0.120
G32     244.1          66.0                8.1 +/-    1.25       8.8 +/-    1.25  0.120 / 0.160