PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-21:12:30
G02     32.0           56.3               11.0 +/-    0.98      12.9 +/-    0.98  0.030 / 0.040
G05     138.2          62.4               12.6 +/-    0.34      14.0 +/-    0.34  0.030 / 0.030
G06     54.4           14.2                9.8 +/-    3.04      24.9 +/-    3.04  0.070 / 0.050
G12     192.4          65.5               13.1 +/-    0.59      14.3 +/-    0.59  0.070 / 0.050
G19     99.3           11.9               12.2 +/-    1.46      32.6 +/-    1.46  0.110 / 0.300
G25     296.4          53.8               11.4 +/-    1.41      13.7 +/-    1.41  0.140 / 0.220
G29     306.9          27.0               11.1 +/-    2.38      20.7 +/-    2.38  0.030 / 0.040