PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-09:27:50
G01     101.7          26.9                6.4 +/-    0.88      12.0 +/-    0.88  0.050 / 0.060
G07     112.9          53.5                5.5 +/-    0.40       6.7 +/-    0.40  0.040 / 0.060
G08     41.9           19.8                2.2 +/-    0.54       4.9 +/-    0.54  0.030 / 0.050
G09     173.6          10.3                4.7 +/-    2.46      13.0 +/-    2.46  0.030 / 0.050
G11     85.1           44.3                5.7 +/-    0.76       7.7 +/-    0.76  0.040 / 0.090
G13     305.9          32.1                4.6 +/-    1.28       7.8 +/-    1.28  0.040 / 0.090
G17     207.0          39.0                6.1 +/-    1.61       9.0 +/-    1.61  0.060 / 0.120
G18     75.6           24.6                4.9 +/-    0.60       9.7 +/-    0.60  0.050 / 0.150
G28     310.9          58.8                4.1 +/-    1.02       4.7 +/-    1.02  0.230 / 0.270
G30     33.0           79.8                5.4 +/-    0.58       5.5 +/-    0.58  0.200 / 0.320