PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-15:42:40
G02     39.4           50.1               14.1 +/-    0.39      17.8 +/-    0.39  0.040 / 0.040
G05     127.1          68.7               16.8 +/-    0.88      17.9 +/-    0.88  0.040 / 0.050
G12     188.0          55.0               16.5 +/-    1.80      19.7 +/-    1.80  0.040 / 0.040
G25     273.7          59.6               14.9 +/-    1.33      16.9 +/-    1.33  0.030 / 0.030
G29     314.0          35.3               13.9 +/-    1.41      22.0 +/-    1.41  0.060 / 0.060