PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-19:57:50
G02     54.7           37.4               14.4 +/-    0.96      21.8 +/-    0.96  0.050 / 0.080
G05     76.0           69.8               16.2 +/-    0.36      17.1 +/-    0.36  0.040 / 0.080
G12     186.1          37.6               17.1 +/-    2.61      25.9 +/-    2.61  0.030 / 0.070
G13     133.7          11.7               18.5 +/-    3.54      49.7 +/-    3.54  0.050 / 0.070
G20     204.7          55.5               18.1 +/-    0.54      21.4 +/-    0.54  0.120 / 0.520
G25     237.5          54.6               15.7 +/-    1.06      18.8 +/-    1.06  0.110 / 0.400
G29     327.3          52.8               14.5 +/-    1.16      17.7 +/-    1.16  0.040 / 0.050