PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-06:43:00
G01     244.1          33.0                5.3 +/-    2.28       8.8 +/-    2.28  0.040 / 0.040
G03     315.0          49.4                3.2 +/-    0.98       4.0 +/-    0.98  0.040 / 0.030
G14     64.3           38.5                3.5 +/-    1.18       5.2 +/-    1.18  0.070 / 0.070
G16     160.4          22.3                3.9 +/-    1.74       8.0 +/-    1.74  0.050 / 0.060
G18     216.2          23.2                6.4 +/-    3.29      13.1 +/-    3.29  0.100 / 0.130
G22     296.2          70.1                4.2 +/-    0.33       4.5 +/-    0.33  0.070 / 0.110
G23     292.2          26.2                4.9 +/-    1.51       9.3 +/-    1.51  0.040 / 0.080
G26     131.8          41.9                4.9 +/-    0.85       6.9 +/-    0.85  0.040 / 0.100
G31     41.3           52.0                3.4 +/-    0.68       4.2 +/-    0.68  0.180 / 0.320
G32     80.4           21.2                2.9 +/-    1.79       6.2 +/-    1.79  0.130 / 0.250