PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-15:12:50
G01     59.5           30.0               10.0 +/-    0.95      17.4 +/-    0.95  0.080 / 0.230
G06     180.0          15.6               12.2 +/-    1.39      29.9 +/-    1.39  0.090 / 0.210
G07     142.1          18.8               11.2 +/-    2.52      25.5 +/-    2.52  0.080 / 0.110
G11     47.3           20.7                8.4 +/-    3.21      18.2 +/-    3.21  0.070 / 0.140
G13     264.4          34.7               12.7 +/-    1.76      20.3 +/-    1.76  0.040 / 0.040
G15     296.3          15.5                9.3 +/-    1.11      22.9 +/-    1.11  0.040 / 0.040
G17     269.8          78.9               12.0 +/-    0.48      12.2 +/-    0.48  0.110 / 0.260
G19     233.8          53.3               12.4 +/-    2.05      15.1 +/-    2.05  0.100 / 0.180
G28     36.8           56.4               13.4 +/-    0.82      15.8 +/-    0.82  0.020 / 0.030
G30     143.7          54.1               11.7 +/-    0.73      14.1 +/-    0.73  0.040 / 0.030