PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-00:27:50
G02     29.9           58.2                9.3 +/-    0.70      10.8 +/-    0.70  0.030 / 0.030
G05     142.9          59.2               12.7 +/-    0.52      14.5 +/-    0.52  0.020 / 0.030
G06     51.9           18.1                9.1 +/-    2.90      21.0 +/-    2.90  0.030 / 0.030
G12     203.1          71.6               11.2 +/-    0.48      11.7 +/-    0.48  0.040 / 0.040
G19     96.3           13.6               10.4 +/-    2.84      26.8 +/-    2.84  0.190 / 0.190
G25     302.8          50.2                8.8 +/-    3.88      11.1 +/-    3.88  0.260 / 0.130
G29     304.1          24.2               10.3 +/-    1.34      20.5 +/-    1.34  0.080 / 0.090