PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/06-19:57:40
G02     9.9            70.3               13.7 +/-    0.49      14.4 +/-    0.49  0.050 / 0.040
G05     161.3          45.2               16.7 +/-    0.65      22.4 +/-    0.65  0.050 / 0.030
G06     46.8           27.6                9.7 +/-    1.51      17.8 +/-    1.51  0.100 / 0.460
G12     245.8          79.8               13.1 +/-    0.64      13.3 +/-    0.64  0.100 / 0.390
G19     88.8           17.1               12.7 +/-    2.35      30.1 +/-    2.35  0.040 / 0.020
G20     197.1          13.0               21.5 +/-    4.23      56.2 +/-    4.23  0.030 / 0.020
G24     219.6          13.5               20.5 +/-    6.42      52.7 +/-    6.42  0.060 / 0.050
G25     310.1          46.7               14.1 +/-    1.90      18.6 +/-    1.90  0.060 / 0.060
G29     297.4          19.1               14.1 +/-    0.59      31.7 +/-    0.59  0.090 / 0.170