PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-08:42:30
G02     33.5           55.4                4.6 +/-    0.67       5.5 +/-    0.67  0.040 / 0.030
G05     141.3          60.5                6.9 +/-    0.77       7.8 +/-    0.77  0.040 / 0.030
G06     51.6           20.8                2.2 +/-    1.03       4.7 +/-    1.03  0.030 / 0.030
G12     207.6          71.2                5.7 +/-    0.99       6.0 +/-    0.99  0.020 / 0.030
G19     98.7           10.6                4.6 +/-    2.10      12.7 +/-    2.10  0.040 / 0.040
G20     200.1          20.3                6.5 +/-    2.55      14.1 +/-    2.55  0.040 / 0.050
G25     300.6          51.5                4.0 +/-    0.84       5.0 +/-    0.84  0.090 / 0.230
G29     306.8          28.3                1.7 +/-    0.75       3.1 +/-    0.75  0.090 / 0.210