PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-00:12:40
G10     257.5          31.1               12.7 +/-    2.33      21.7 +/-    2.33  0.040 / 0.040
G13     48.1           26.5               10.6 +/-    2.24      20.0 +/-    2.24  0.040 / 0.040
G15     74.3           56.0               10.9 +/-    0.48      12.8 +/-    0.48  0.210 / 0.410
G16     290.0          13.7               10.6 +/-    1.93      27.1 +/-    1.93  0.190 / 0.380
G18     280.7          59.6               11.7 +/-    0.81      13.4 +/-    0.81  0.120 / 0.110
G20     48.8           40.9               10.3 +/-    0.60      14.7 +/-    0.60  0.070 / 0.110
G21     344.6          65.9               10.1 +/-    0.80      10.9 +/-    0.80  0.040 / 0.080
G26     262.7          12.2               13.2 +/-    2.15      35.1 +/-    2.15  0.050 / 0.100
G27     321.2          12.9                8.0 +/-    2.03      21.0 +/-    2.03  0.130 / 0.220
G29     165.7          38.7               14.4 +/-    0.86      21.4 +/-    0.86  0.110 / 0.220