PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-12:27:30
G02     204.1          33.5                5.5 +/-    1.82       9.0 +/-    1.82  0.080 / 0.100
G06     154.5          70.4                5.3 +/-    0.42       5.5 +/-    0.42  0.110 / 0.090
G12     307.5          16.6                3.1 +/-    4.83       7.3 +/-    4.83  0.060 / 0.050
G17     34.5           50.3                3.3 +/-    1.73       4.1 +/-    1.73  0.040 / 0.050
G19     7.0            63.9                4.6 +/-    0.58       5.1 +/-    0.58  0.040 / 0.040
G24     297.8          37.4                3.2 +/-    4.03       4.8 +/-    4.03  0.060 / 0.040
G28     99.4           36.9                5.2 +/-    1.22       8.0 +/-    1.22  0.030 / 0.020