PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-14:28:00
G02     48.2           42.1                6.1 +/-    0.60       8.6 +/-    0.60  0.030 / 0.040
G05     99.5           70.2                7.2 +/-    0.62       7.6 +/-    0.62  0.030 / 0.030
G12     190.4          50.3                9.8 +/-    2.38      12.3 +/-    2.38  0.050 / 0.090
G20     202.3          42.1               10.7 +/-    1.03      15.0 +/-    1.03  0.060 / 0.090
G21     260.5          11.0                1.0 +/-   13.04       2.8 +/-   13.04  0.110 / 0.550
G25     263.2          58.7                8.5 +/-    0.90       9.8 +/-    0.90  0.140 / 0.440
G29     322.2          46.2                5.1 +/-    1.03       6.8 +/-    1.03  0.040 / 0.040