PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-20:42:30
G02     43.4           47.3               11.0 +/-    0.56      14.3 +/-    0.56  0.050 / 0.060
G05     116.2          70.5               13.5 +/-    0.47      14.2 +/-    0.47  0.050 / 0.070
G12     188.9          51.2               14.5 +/-    1.05      18.1 +/-    1.05  0.040 / 0.060
G20     200.2          42.0               16.2 +/-    1.56      22.9 +/-    1.56  0.040 / 0.060
G25     261.0          60.3               12.8 +/-    1.20      14.5 +/-    1.20  0.050 / 0.080
G29     318.1          40.9               13.1 +/-    1.66      18.8 +/-    1.66  0.080 / 0.060