PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-01:12:30
G02     26.8           60.9               11.3 +/-    0.48      12.7 +/-    0.48  0.020 / 0.030
G05     147.4          55.9               14.8 +/-    0.68      17.4 +/-    0.68  0.030 / 0.030
G06     50.0           21.2                8.0 +/-    2.08      17.0 +/-    2.08  0.030 / 0.040
G12     213.6          75.4               12.7 +/-    1.37      13.1 +/-    1.37  0.030 / 0.040
G19     93.4           15.5               11.6 +/-    1.66      28.5 +/-    1.66  0.040 / 0.070
G25     306.8          47.2               12.3 +/-    1.25      16.0 +/-    1.25  0.050 / 0.060
G29     301.6          21.8               10.3 +/-    2.93      21.8 +/-    2.93  0.030 / 0.060