PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-01:58:10
G02     43.5           46.2                8.2 +/-    0.73      10.9 +/-    0.73  0.030 / 0.040
G05     107.9          68.5               10.3 +/-    0.77      11.0 +/-    0.77  0.030 / 0.050
G12     190.2          55.3               10.8 +/-    0.40      12.8 +/-    0.40  0.030 / 0.040
G25     278.3          57.6               14.9 +/-    1.59      17.3 +/-    1.59  0.030 / 0.030
G29     314.5          35.7                9.2 +/-    1.71      14.4 +/-    1.71  0.040 / 0.050