PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-23:57:50
G10     247.0          22.6               16.0 +/-    2.02      33.1 +/-    2.02  0.040 / 0.070
G13     59.0           33.5               11.0 +/-    1.17      17.9 +/-    1.17  0.030 / 0.060
G15     99.3           58.3               13.3 +/-    0.40      15.3 +/-    0.40  0.120 / 0.280
G16     301.8          14.5                8.6 +/-    1.07      21.7 +/-    1.07  0.120 / 0.400
G18     262.0          52.2               14.2 +/-    0.77      17.4 +/-    0.77  0.120 / 0.210
G20     40.6           51.2               10.2 +/-    0.52      12.7 +/-    0.52  0.120 / 0.210
G21     328.2          57.3               11.7 +/-    0.80      13.7 +/-    0.80  0.030 / 0.070
G26     274.1          17.0               12.2 +/-    1.53      28.9 +/-    1.53  0.030 / 0.050
G29     162.6          52.4               13.6 +/-    0.77      16.7 +/-    0.77  0.040 / 0.060