PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-07:12:40
G03     191.0          18.2                7.2 +/-    3.11      16.6 +/-    3.11  0.090 / 0.260
G07     296.8          41.7                3.9 +/-    1.03       5.6 +/-    1.03  0.140 / 0.270
G08     135.6          32.8                7.7 +/-    1.32      12.7 +/-    1.32  0.040 / 0.060
G09     319.7          70.2                2.9 +/-    1.18       3.0 +/-    1.18  0.040 / 0.080
G16     42.0           37.8                2.8 +/-    0.69       4.2 +/-    0.69  0.050 / 0.080
G23     127.4          76.9                4.6 +/-    0.41       4.7 +/-    0.41  0.070 / 0.100
G26     44.1           11.0                2.2 +/-    1.86       6.0 +/-    1.86  0.050 / 0.090
G27     91.8           35.3                5.2 +/-    0.49       8.2 +/-    0.49  0.040 / 0.070
G30     276.8          14.6                8.1 +/-    0.86      20.3 +/-    0.86  0.070 / 0.110