PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/26-12:43:00
G02     203.9          28.8                5.2 +/-    1.44       9.3 +/-    1.44  0.070 / 0.110
G06     160.2          67.4                4.9 +/-    1.15       5.3 +/-    1.15  0.070 / 0.110
G12     307.0          16.0                2.0 +/-    2.77       4.8 +/-    2.77  0.130 / 0.370
G17     35.5           49.4                3.4 +/-    0.47       4.3 +/-    0.47  0.150 / 0.260
G19     343.7          67.8                2.7 +/-    0.60       2.9 +/-    0.60  0.080 / 0.080
G24     297.9          39.0                3.8 +/-    1.70       5.7 +/-    1.70  0.090 / 0.080
G28     99.7           33.5                4.3 +/-    1.01       7.0 +/-    1.01  0.030 / 0.030