PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-14:42:50
G02     218.2          56.9                9.3 +/-    0.74      10.9 +/-    0.74  0.040 / 0.060
G06     53.5           72.0                9.6 +/-    0.51      10.0 +/-    0.51  0.050 / 0.060
G12     320.0          40.8                7.6 +/-    1.40      11.0 +/-    1.40  0.030 / 0.030
G17     59.3           30.2                7.6 +/-    0.83      13.2 +/-    0.83  0.040 / 0.030
G19     35.3           51.8                7.3 +/-    0.37       9.0 +/-    0.37  0.070 / 0.120
G24     260.2          41.6                9.8 +/-    1.24      13.9 +/-    1.24  0.080 / 0.160
G28     123.3          13.4                9.4 +/-    2.01      24.3 +/-    2.01  0.120 / 0.460