PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-16:42:40
G02     205.3          36.2               14.2 +/-    1.23      22.0 +/-    1.23  0.150 / 0.200
G06     151.5          73.4               13.1 +/-    0.93      13.7 +/-    0.93  0.100 / 0.220
G12     310.4          19.2               10.2 +/-    1.26      22.8 +/-    1.26  0.050 / 0.070
G17     42.5           43.8               10.2 +/-    0.52      13.9 +/-    0.52  0.060 / 0.110
G19     14.7           61.3               10.2 +/-    0.37      11.4 +/-    0.37  0.040 / 0.060
G24     295.1          39.0               10.8 +/-    1.82      16.0 +/-    1.82  0.030 / 0.060
G28     107.0          27.9                9.7 +/-    1.17      17.7 +/-    1.17  0.030 / 0.030