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               12.0 +/-    0.44      14.1 +/-    0.44  0.030 / 0.040
G05     138.2          62.4               14.3 +/-    0.88      15.9 +/-    0.88  0.030 / 0.030
G06     54.4           14.2                9.5 +/-    2.36      24.1 +/-    2.36  0.030 / 0.030
G12     192.4          65.5               13.3 +/-    1.14      14.5 +/-    1.14  0.030 / 0.040
G19     99.3           11.9               12.2 +/-    2.24      32.7 +/-    2.24  0.050 / 0.050
G25     296.4          53.8               11.9 +/-    0.79      14.3 +/-    0.79  0.040 / 0.070
G29     306.9          27.0                9.7 +/-    1.46      18.1 +/-    1.46  0.040 / 0.050