PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-00:43:10
G10     247.3          22.9               12.5 +/-    2.25      25.7 +/-    2.25  0.120 / 0.200
G13     58.4           33.2                8.0 +/-    0.83      13.1 +/-    0.83  0.130 / 0.180
G15     99.4           58.5               10.6 +/-    0.47      12.2 +/-    0.47  0.040 / 0.060
G16     301.1          14.6                6.7 +/-    2.17      16.7 +/-    2.17  0.030 / 0.050
G18     262.4          52.2                9.3 +/-    0.78      11.4 +/-    0.78  0.030 / 0.060
G20     41.0           50.6                8.1 +/-    0.34      10.1 +/-    0.34  0.030 / 0.060
G21     328.4          57.5                8.8 +/-    0.85      10.2 +/-    0.85  0.110 / 0.260
G26     273.3          16.9                9.5 +/-    1.95      22.6 +/-    1.95  0.110 / 0.370
G29     163.0          52.3               10.6 +/-    0.53      13.1 +/-    0.53  0.040 / 0.050