PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-22:42:50
G10     246.5          22.2               18.3 +/-    2.92      38.2 +/-    2.92  0.120 / 0.270
G13     59.8           33.9               12.9 +/-    0.71      21.0 +/-    0.71  0.140 / 0.330
G15     99.1           58.0               16.2 +/-    0.22      18.7 +/-    0.22  0.100 / 0.380
G16     303.1          14.2                9.3 +/-    1.62      23.7 +/-    1.62  0.090 / 0.380
G18     261.6          52.3               14.9 +/-    0.68      18.3 +/-    0.68  0.040 / 0.050
G20     39.9           52.1               12.1 +/-    0.64      14.9 +/-    0.64  0.030 / 0.060
G21     328.2          57.3               13.3 +/-    1.11      15.5 +/-    1.11  0.030 / 0.050
G26     275.4          17.0               12.1 +/-    2.02      28.7 +/-    2.02  0.030 / 0.050
G29     161.9          52.3               15.9 +/-    1.16      19.5 +/-    1.16  0.040 / 0.050