PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-14:57:30
G02     201.1          16.7               11.9 +/-    2.13      28.5 +/-    2.13  0.130 / 0.180
G06     168.5          54.0               11.5 +/-    0.92      13.8 +/-    0.92  0.110 / 0.180
G13     228.0          14.1               10.9 +/-    2.30      27.8 +/-    2.30  0.120 / 0.110
G17     22.1           59.9               10.0 +/-    0.77      11.3 +/-    0.77  0.110 / 0.120
G19     305.7          70.1                9.1 +/-    0.52       9.6 +/-    0.52  0.180 / 0.350
G24     310.1          30.0                9.0 +/-    1.06      15.8 +/-    1.06  0.180 / 0.660
G28     86.0           40.8                8.0 +/-    1.11      11.6 +/-    1.11  0.030 / 0.040
G30     157.5          17.5               10.8 +/-    1.22      25.4 +/-    1.22  0.040 / 0.040