PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-17:57:50
G02     15.5           68.2               15.8 +/-    0.68      16.8 +/-    0.68  0.070 / 0.070
G05     162.1          45.6               18.8 +/-    0.66      25.1 +/-    0.66  0.080 / 0.060
G06     47.0           27.4               12.1 +/-    1.72      22.4 +/-    1.72  0.030 / 0.020
G12     244.2          79.3               15.1 +/-    0.56      15.4 +/-    0.56  0.030 / 0.020
G19     89.8           16.5               14.8 +/-    2.18      35.6 +/-    2.18  0.170 / 0.280
G20     197.4          13.6               26.2 +/-    2.70      67.4 +/-    2.70  0.080 / 0.290
G24     218.8          12.7               22.0 +/-    1.78      57.9 +/-    1.78  0.050 / 0.050
G25     309.8          46.3               16.2 +/-    0.91      21.4 +/-    0.91  0.050 / 0.040
G29     298.9          21.0               15.9 +/-    1.34      34.2 +/-    1.34  0.230 / 0.430