PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-20:43:00
G02     36.6           52.9               12.2 +/-    1.72      14.8 +/-    1.72  0.030 / 0.050
G05     135.6          66.3               12.5 +/-    0.65      13.5 +/-    0.65  0.030 / 0.050
G06     57.9           10.7               10.0 +/-    2.06      27.5 +/-    2.06  0.040 / 0.050
G12     192.0          59.4               14.1 +/-    0.36      16.1 +/-    0.36  0.030 / 0.040
G20     198.7          34.4               13.1 +/-    1.52      21.1 +/-    1.52  0.030 / 0.030
G25     277.3          60.2                6.1 +/-    1.51       7.0 +/-    1.51  0.030 / 0.060
G29     313.0          34.9                9.5 +/-    2.48      15.1 +/-    2.48  0.030 / 0.030