PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-18:12:30
G02     228.0          67.7               12.9 +/-    1.26      13.9 +/-    1.26  0.050 / 0.100
G06     43.2           63.8               11.5 +/-    0.75      12.6 +/-    0.75  0.050 / 0.100
G12     321.6          47.5                9.7 +/-    1.46      12.6 +/-    1.46  0.030 / 0.060
G17     68.4           23.1               10.1 +/-    0.79      20.6 +/-    0.79  0.030 / 0.060
G19     53.8           40.2               11.0 +/-    0.78      15.9 +/-    0.78  0.150 / 0.370
G24     253.4          37.9               12.3 +/-    0.88      18.6 +/-    0.88  0.160 / 0.390
G25     315.9          12.2               11.9 +/-    1.87      31.7 +/-    1.87  0.070 / 0.110