PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-17:27:50
G02     22.7           63.8               15.6 +/-    0.60      17.2 +/-    0.60  0.120 / 0.080
G05     158.1          51.1               19.1 +/-    0.58      23.8 +/-    0.58  0.140 / 0.100
G06     49.2           23.7               11.4 +/-    3.22      22.9 +/-    3.22  0.030 / 0.030
G12     221.3          76.6               13.7 +/-    0.87      14.1 +/-    0.87  0.020 / 0.020
G19     93.8           13.6               15.1 +/-    1.99      38.9 +/-    1.99  0.040 / 0.040
G20     197.5          18.0               22.1 +/-    3.38      51.1 +/-    3.38  0.030 / 0.040
G25     305.6          49.9               14.7 +/-    2.88      18.5 +/-    2.88  0.060 / 0.130
G29     302.7          24.7               11.3 +/-    1.24      22.2 +/-    1.24  0.080 / 0.130