PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/08-20:42:40
G02     60.4           32.9                9.2 +/-    0.41      15.2 +/-    0.41  0.030 / 0.040
G05     55.3           59.4               10.9 +/-    0.52      12.4 +/-    0.52  0.030 / 0.040
G12     181.4          27.0               13.8 +/-    1.36      25.9 +/-    1.36  0.050 / 0.170
G13     126.0          16.8               13.5 +/-    1.37      32.2 +/-    1.37  0.060 / 0.110
G15     164.9          12.7               15.6 +/-    2.76      41.0 +/-    2.76  0.050 / 0.090
G21     272.9          17.8               13.4 +/-    2.82      31.0 +/-    2.82  0.050 / 0.090
G25     232.1          50.0               11.5 +/-    1.58      14.4 +/-    1.58  0.050 / 0.060
G29     328.8          55.6               10.2 +/-    0.72      12.1 +/-    0.72  0.040 / 0.070