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                4.8 +/-    1.19       9.0 +/-    1.19  0.030 / 0.040
G07     112.9          53.5                5.8 +/-    0.64       7.0 +/-    0.64  0.030 / 0.040
G08     41.9           19.8                3.1 +/-    2.54       6.9 +/-    2.54  0.050 / 0.090
G09     173.6          10.3                3.2 +/-    3.40       8.8 +/-    3.40  0.080 / 0.080
G11     85.1           44.3                6.8 +/-    0.95       9.2 +/-    0.95  0.200 / 0.450
G13     305.9          32.1                3.9 +/-    1.60       6.5 +/-    1.60  0.190 / 0.370
G17     207.0          39.0                5.7 +/-    0.77       8.4 +/-    0.77  0.080 / 0.150
G18     75.6           24.6                5.6 +/-    1.43      11.0 +/-    1.43  0.090 / 0.150
G28     310.9          58.8                4.2 +/-    0.77       4.9 +/-    0.77  0.050 / 0.050
G30     33.0           79.8                4.9 +/-    0.51       5.0 +/-    0.51  0.050 / 0.070