PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-11:42:40
G03     189.0          18.7                3.3 +/-    2.27       7.5 +/-    2.27  0.260 / 0.270
G07     295.3          42.7                5.2 +/-    3.93       7.2 +/-    3.93  0.130 / 0.330
G08     141.9          28.5                3.9 +/-    1.37       7.0 +/-    1.37  0.160 / 0.090
G09     320.0          63.3                4.0 +/-    0.56       4.4 +/-    0.56  0.210 / 0.130
G16     43.0           37.9                2.3 +/-    0.70       3.5 +/-    0.70  0.050 / 0.070
G23     122.8          74.9                5.0 +/-    0.82       5.2 +/-    0.82  0.050 / 0.080
G26     44.1           10.6                3.8 +/-    2.14      10.4 +/-    2.14  0.030 / 0.040
G27     99.0           34.2                4.4 +/-    1.14       7.1 +/-    1.14  0.030 / 0.040
G30     276.0          15.9                4.3 +/-    1.00      10.6 +/-    1.00  0.040 / 0.030