PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-20:12:50
G02     58.7           34.2               10.0 +/-    1.00      16.1 +/-    1.00  0.040 / 0.060
G05     64.1           66.6               13.5 +/-    0.66      14.6 +/-    0.66  0.040 / 0.060
G12     185.1          32.4               16.0 +/-    0.79      26.6 +/-    0.79  0.110 / 0.290
G13     130.0          15.0               17.4 +/-    1.76      43.2 +/-    1.76  0.120 / 0.270
G15     164.6          11.3               19.0 +/-   22.36      51.5 +/-   22.36  0.060 / 0.120
G20     207.0          60.9               16.3 +/-    0.75      18.4 +/-    0.75  0.100 / 0.100
G21     271.1          17.8               14.3 +/-    1.66      33.2 +/-    1.66  0.030 / 0.040
G25     230.3          51.0               15.6 +/-    0.46      19.5 +/-    0.46  0.030 / 0.040
G29     330.6          57.3                9.8 +/-    0.89      11.4 +/-    0.89  0.030 / 0.050