PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-06:43:10
G01     225.5          16.4                4.7 +/-    1.32      11.3 +/-    1.32  0.040 / 0.030
G03     289.0          66.0                5.8 +/-    0.78       6.3 +/-    0.78  0.040 / 0.030
G09     295.6          11.1              -11.0 +/-   19.03     -30.1 +/-   19.03  0.080 / 0.160
G14     88.3           22.1                3.8 +/-    0.85       7.9 +/-    0.85  0.120 / 0.170
G16     148.8          45.2                6.9 +/-    0.60       9.2 +/-    0.60  0.210 / 0.190
G22     214.0          70.3                4.6 +/-    0.63       4.9 +/-    0.63  0.050 / 0.060
G23     307.0          36.4                4.0 +/-    1.26       6.2 +/-    1.26  0.040 / 0.070
G26     100.1          55.0                5.0 +/-    0.38       6.0 +/-    0.38  0.080 / 0.170
G31     44.9           32.7                2.1 +/-    1.15       3.5 +/-    1.15  0.080 / 0.170