PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-16:12:30
G02     209.5          47.7               15.7 +/-    1.89      20.3 +/-    1.89  0.060 / 0.120
G06     106.9          79.7               14.1 +/-    0.70      14.3 +/-    0.70  0.060 / 0.110
G12     315.1          27.5               12.9 +/-    1.51      23.9 +/-    1.51  0.050 / 0.090
G17     51.2           36.5               11.3 +/-    0.49      17.4 +/-    0.49  0.060 / 0.090
G19     30.0           54.2               13.0 +/-    1.23      15.7 +/-    1.23  0.040 / 0.080
G24     281.7          41.8               12.2 +/-    0.96      17.3 +/-    0.96  0.040 / 0.080
G28     115.9          20.5               11.9 +/-    1.39      25.9 +/-    1.39  0.020 / 0.030