PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-20:12:30
G02     227.5          69.1               13.6 +/-    0.60      14.5 +/-    0.60  0.030 / 0.050
G05     174.0          11.0                2.0 +/-   32.93       5.4 +/-   32.93  0.030 / 0.040
G06     43.5           63.4               12.1 +/-    0.55      13.4 +/-    0.55  0.170 / 0.350
G12     321.7          47.9               12.0 +/-    0.55      15.6 +/-    0.55  0.190 / 0.360
G17     65.1           27.1               11.7 +/-    2.36      21.9 +/-    2.36  0.080 / 0.120
G19     48.1           44.7               12.8 +/-    0.94      17.3 +/-    0.94  0.100 / 0.090
G24     251.4          38.1               14.3 +/-    1.74      21.5 +/-    1.74  0.040 / 0.090