PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-14:13:10
G01     48.5           24.0                8.0 +/-    0.57      15.9 +/-    0.57  0.110 / 0.210
G06     177.7          26.9               10.4 +/-    1.73      19.5 +/-    1.73  0.090 / 0.240
G11     43.7           11.1                7.5 +/-    1.20      20.5 +/-    1.20  0.050 / 0.060
G13     250.8          29.2                9.7 +/-    1.49      17.3 +/-    1.49  0.050 / 0.060
G15     283.9          15.2                7.9 +/-    2.65      19.5 +/-    2.65  0.020 / 0.030
G17     337.8          77.4               11.2 +/-    0.71      11.5 +/-    0.71  0.030 / 0.030
G19     252.3          63.7               10.0 +/-    0.67      11.1 +/-    0.67  0.050 / 0.110
G28     56.0           51.8                8.1 +/-    0.45       9.9 +/-    0.45  0.050 / 0.100
G30     150.7          41.1                9.6 +/-    0.90      13.8 +/-    0.90  0.070 / 0.180