PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-20:58:00
G02     27.0           60.2               11.9 +/-    0.74      13.5 +/-    0.74  0.030 / 0.040
G05     145.8          58.2               15.1 +/-    0.67      17.4 +/-    0.67  0.030 / 0.040
G06     51.8           17.8               10.4 +/-    2.37      24.2 +/-    2.37  0.170 / 0.220
G12     197.7          70.9               12.9 +/-    1.07      13.6 +/-    1.07  0.180 / 0.120
G19     95.3           14.9               12.9 +/-    2.43      32.3 +/-    2.43  0.060 / 0.110
G25     302.9          50.5               11.6 +/-    2.85      14.6 +/-    2.85  0.050 / 0.080
G29     303.5          23.5               10.7 +/-    1.36      21.7 +/-    1.36  0.020 / 0.030