PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-22:12:50
G02     85.1           13.5                9.8 +/-    1.90      25.1 +/-    1.90  0.070 / 0.100
G05     44.7           34.5                8.8 +/-    0.67      14.1 +/-    0.67  0.080 / 0.110
G13     97.6           34.8               10.8 +/-    0.81      17.2 +/-    0.81  0.100 / 0.170
G15     144.2          39.5               14.2 +/-    0.81      20.8 +/-    0.81  0.110 / 0.190
G18     232.9          28.8               15.7 +/-    2.22      28.3 +/-    2.22  0.080 / 0.260
G20     7.5            80.7                9.2 +/-    0.73       9.3 +/-    0.73  0.080 / 0.190
G21     299.0          37.7               11.2 +/-    0.97      17.0 +/-    0.97  0.030 / 0.030
G25     203.6          21.0               13.1 +/-    0.92      28.1 +/-    0.92  0.020 / 0.030
G26     305.0          18.0                8.7 +/-    1.28      20.1 +/-    1.28  0.050 / 0.100
G29     106.6          85.7               11.4 +/-    1.14      11.5 +/-    1.14  0.040 / 0.080