PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-20:12:30
G02     36.4           53.1               12.0 +/-    0.68      14.6 +/-    0.68  0.030 / 0.050
G05     138.1          65.7               13.1 +/-    0.52      14.2 +/-    0.52  0.030 / 0.040
G06     57.5           11.3                9.9 +/-    1.95      26.7 +/-    1.95  0.050 / 0.060
G12     192.7          60.3               12.3 +/-    0.72      13.9 +/-    0.72  0.050 / 0.050
G20     198.7          33.6               15.3 +/-    1.26      24.9 +/-    1.26  0.030 / 0.050
G25     279.2          59.9               13.1 +/-    0.73      14.9 +/-    0.73  0.040 / 0.040
G29     312.8          34.7               10.9 +/-    1.29      17.3 +/-    1.29  0.050 / 0.090