PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-01:42:10
G02     49.4           41.0                8.6 +/-    0.39      12.3 +/-    0.39  0.050 / 0.090
G05     84.9           68.2               10.4 +/-    0.30      11.1 +/-    0.30  0.050 / 0.080
G12     187.3          46.6               13.6 +/-    1.70      17.9 +/-    1.70  0.030 / 0.060
G25     262.4          57.9               12.0 +/-    0.81      13.9 +/-    0.81  0.030 / 0.090
G29     319.3          41.8               11.5 +/-    0.90      16.2 +/-    0.90  0.030 / 0.040