PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-06:58:00
G01     110.0          22.3                4.0 +/-    1.46       8.4 +/-    1.46  0.040 / 0.030
G07     98.9           60.9                6.2 +/-    0.85       7.0 +/-    0.85  0.040 / 0.030
G08     42.8           25.7                3.5 +/-    2.74       6.6 +/-    2.74  0.190 / 0.210
G09     174.4          17.1                4.9 +/-    1.29      11.7 +/-    1.29  0.150 / 0.280
G11     98.8           43.9                6.4 +/-    0.77       8.8 +/-    0.77  0.070 / 0.070
G13     312.7          26.6                3.5 +/-    1.93       6.7 +/-    1.93  0.040 / 0.060
G17     203.3          31.4                5.5 +/-    1.23       9.3 +/-    1.23  0.040 / 0.040
G28     294.6          55.6                3.7 +/-    0.96       4.4 +/-    0.96  0.040 / 0.040
G30     355.0          73.6                5.3 +/-    0.39       5.5 +/-    0.39  0.150 / 0.120