PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-20:42:20
G02     23.5           62.7               11.8 +/-    0.90      13.1 +/-    0.90  0.040 / 0.040
G05     149.6          55.2               16.7 +/-    0.91      19.9 +/-    0.91  0.030 / 0.040
G06     50.3           20.2                8.7 +/-    1.55      19.1 +/-    1.55  0.070 / 0.060
G12     202.9          74.0               13.2 +/-    0.85      13.7 +/-    0.85  0.050 / 0.080
G19     92.7           16.8               11.8 +/-    1.65      28.1 +/-    1.65  0.090 / 0.250
G25     306.1          48.2               11.5 +/-    0.91      14.8 +/-    0.91  0.080 / 0.270
G29     301.3          21.3               12.3 +/-    2.71      26.2 +/-    2.71  0.040 / 0.060