PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-16:28:10
G02     21.5           63.3                6.4 +/-    0.93       7.1 +/-    0.93  0.030 / 0.030
G05     152.6          55.4                8.2 +/-    0.92       9.8 +/-    0.92  0.030 / 0.020
G06     50.9           19.3                6.3 +/-    2.06      14.2 +/-    2.06  0.040 / 0.030
G12     199.4          72.2                7.9 +/-    0.70       8.2 +/-    0.70  0.030 / 0.040
G19     93.5           17.1                7.0 +/-    1.56      16.5 +/-    1.56  0.050 / 0.070
G25     302.7          51.4                7.5 +/-    4.76       9.3 +/-    4.76  0.050 / 0.060
G29     302.8          23.0                7.3 +/-    1.79      15.0 +/-    1.79  0.130 / 0.210