PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-17:42:30
G02     30.0           58.3               16.5 +/-    0.53      19.1 +/-    0.53  0.030 / 0.040
G05     151.8          57.9               19.3 +/-    1.01      22.3 +/-    1.01  0.020 / 0.040
G06     52.5           18.5               11.6 +/-    0.56      26.4 +/-    0.56  0.040 / 0.050
G12     203.8          70.3               14.3 +/-    0.95      15.1 +/-    0.95  0.040 / 0.060
G20     197.9          24.4               19.5 +/-    1.70      38.6 +/-    1.70  0.030 / 0.040
G25     297.1          54.8               15.3 +/-    1.34      18.2 +/-    1.34  0.040 / 0.040
G29     307.5          29.5               13.7 +/-    1.34      24.2 +/-    1.34  0.050 / 0.130