PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-19:27:50
G02     16.0           67.5               10.6 +/-    0.36      11.4 +/-    0.36  0.060 / 0.080
G05     160.1          48.0               14.4 +/-    0.76      18.6 +/-    0.76  0.050 / 0.080
G06     48.1           25.3                9.8 +/-    0.60      19.0 +/-    0.60  0.120 / 0.260
G12     230.0          78.5               12.5 +/-    0.95      12.8 +/-    0.95  0.090 / 0.290
G19     91.3           15.3               10.4 +/-    0.90      25.7 +/-    0.90  0.030 / 0.030
G20     197.1          15.7               15.7 +/-    1.98      38.4 +/-    1.98  0.030 / 0.040
G24     217.6          11.5               14.2 +/-    2.19      38.2 +/-    2.19  0.100 / 0.170
G25     307.7          48.8               13.5 +/-    1.84      17.2 +/-    1.84  0.110 / 0.160
G29     299.8          21.4               12.7 +/-    1.37      27.0 +/-    1.37  0.060 / 0.060