PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-08:27:50
G01     241.3          31.0                7.8 +/-    1.74      13.4 +/-    1.74  0.040 / 0.040
G03     313.4          53.4                5.6 +/-    0.77       6.8 +/-    0.77  0.040 / 0.030
G14     67.7           36.2                5.2 +/-    1.75       8.0 +/-    1.75  0.060 / 0.040
G16     159.6          24.7                6.5 +/-    1.24      12.7 +/-    1.24  0.050 / 0.030
G18     214.1          20.7                6.3 +/-    1.08      13.7 +/-    1.08  0.090 / 0.140
G22     286.7          73.2                6.1 +/-    0.45       6.4 +/-    0.45  0.110 / 0.170
G23     293.9          26.9                5.9 +/-    1.64      11.0 +/-    1.64  0.050 / 0.090
G26     129.2          44.1                5.8 +/-    0.65       8.0 +/-    0.65  0.060 / 0.100
G31     41.2           49.4                4.4 +/-    0.60       5.5 +/-    0.60  0.090 / 0.190
G32     82.5           20.0                3.2 +/-    1.43       7.0 +/-    1.43  0.080 / 0.180