PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-14:12:30
G02     252.1          76.0                5.7 +/-    1.14       5.9 +/-    1.14  0.130 / 0.250
G05     172.6          18.1                7.9 +/-    1.08      18.2 +/-    1.08  0.120 / 0.330
G06     40.0           52.7                5.0 +/-    0.60       6.1 +/-    0.60  0.040 / 0.040
G12     321.7          59.6                5.1 +/-    0.94       5.8 +/-    0.94  0.050 / 0.040
G17     75.7           17.9                6.4 +/-    1.04      14.7 +/-    1.04  0.090 / 0.120
G19     58.6           39.2                5.7 +/-    0.54       8.4 +/-    0.54  0.080 / 0.150
G24     237.1          31.5                6.0 +/-    1.47      10.2 +/-    1.47  0.050 / 0.180
G25     317.3          18.9                4.7 +/-    1.66      10.6 +/-    1.66  0.090 / 0.180