PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-20:12:40
G02     234.2          72.4               10.7 +/-    0.39      11.2 +/-    0.39  0.040 / 0.050
G05     172.5          14.0               13.3 +/-    1.90      33.8 +/-    1.90  0.030 / 0.050
G06     41.7           59.6               10.9 +/-    0.40      12.5 +/-    0.40  0.150 / 0.170
G12     322.2          51.7                9.4 +/-    0.58      11.7 +/-    0.58  0.110 / 0.210
G17     68.3           24.7               10.3 +/-    1.10      20.2 +/-    1.10  0.070 / 0.070
G19     52.2           42.4                9.3 +/-    0.53      13.1 +/-    0.53  0.070 / 0.080
G24     247.1          36.3               10.8 +/-    1.92      16.8 +/-    1.92  0.060 / 0.080