PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-15:12:30
G02     201.2          20.3               13.9 +/-    2.02      30.3 +/-    2.02  0.140 / 0.290
G06     170.7          55.4               14.7 +/-    0.96      17.5 +/-    0.96  0.130 / 0.310
G13     227.9          12.3               13.1 +/-    4.01      34.8 +/-    4.01  0.090 / 0.140
G17     27.2           56.5               11.6 +/-    0.43      13.6 +/-    0.43  0.090 / 0.160
G19     335.6          70.7               12.7 +/-    0.39      13.4 +/-    0.39  0.030 / 0.050
G24     310.2          29.3               11.4 +/-    0.88      20.2 +/-    0.88  0.030 / 0.040
G28     90.3           38.5               10.5 +/-    0.60      15.7 +/-    0.60  0.130 / 0.550
G30     157.8          14.7               11.3 +/-    2.06      28.3 +/-    2.06  0.090 / 0.420