PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-05:57:50
G01     316.9          23.4                3.1 +/-    0.69       6.3 +/-    0.69  0.090 / 0.050
G08     254.6          10.7                6.4 +/-    2.45      17.6 +/-    2.45  0.080 / 0.060
G10     88.3           48.6                4.0 +/-    0.84       5.2 +/-    0.84  0.090 / 0.440
G11     297.8          25.1                6.1 +/-    1.11      11.8 +/-    1.11  0.150 / 0.470
G14     313.7          71.4                4.2 +/-    0.61       4.4 +/-    0.61  0.040 / 0.010
G18     298.2          45.1                4.6 +/-    1.74       6.1 +/-    1.74  0.040 / 0.020
G20     110.0          25.3                4.3 +/-    2.33       8.3 +/-    2.33  0.040 / 0.050
G22     304.0          15.2                3.3 +/-    4.14       8.2 +/-    4.14  0.040 / 0.060
G31     173.3          48.7                6.8 +/-    0.60       8.7 +/-    0.60  0.120 / 0.150
G32     12.4           65.2                1.8 +/-    0.80       2.0 +/-    0.80  0.120 / 0.120