PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/01-00:58:00
G02     52.1           38.9               11.6 +/-    0.40      17.1 +/-    0.40  0.040 / 0.060
G05     75.4           66.8               14.4 +/-    0.43      15.5 +/-    0.43  0.040 / 0.060
G12     186.0          42.2               15.1 +/-    1.90      21.2 +/-    1.90  0.120 / 0.410
G21     263.6          10.8                6.3 +/-   28.44      17.2 +/-   28.44  0.090 / 0.490
G25     254.6          57.0               14.4 +/-    1.25      16.8 +/-    1.25  0.030 / 0.040
G29     321.5          44.8               13.0 +/-    0.87      17.6 +/-    0.87  0.030 / 0.050