PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-15:58:00
G02     45.3           45.3               14.9 +/-    0.77      20.0 +/-    0.77  0.040 / 0.040
G05     105.5          71.2               17.0 +/-    0.79      17.8 +/-    0.79  0.040 / 0.060
G12     186.0          47.4               18.7 +/-    2.48      24.3 +/-    2.48  0.040 / 0.040
G25     258.7          59.3               16.2 +/-    0.59      18.5 +/-    0.59  0.030 / 0.030
G29     318.5          40.7               16.4 +/-    1.42      23.6 +/-    1.42  0.120 / 0.070