PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-23:28:00
G10     251.0          26.1               14.4 +/-    1.02      27.4 +/-    1.02  0.070 / 0.140
G13     54.2           31.1               12.9 +/-    0.71      22.0 +/-    0.71  0.110 / 0.160
G15     88.1           58.0               14.8 +/-    0.64      17.1 +/-    0.64  0.050 / 0.050
G16     297.4          14.4                9.6 +/-    2.69      24.1 +/-    2.69  0.050 / 0.060
G18     269.1          55.6               14.4 +/-    1.00      17.0 +/-    1.00  0.100 / 0.310
G20     43.8           47.1               10.1 +/-    0.72      13.2 +/-    0.72  0.120 / 0.390
G21     334.5          60.9               12.3 +/-    1.04      13.9 +/-    1.04  0.050 / 0.070
G26     269.7          15.2               13.5 +/-    1.39      33.5 +/-    1.39  0.040 / 0.060
G29     163.9          46.5               16.2 +/-    0.39      21.3 +/-    0.39  0.050 / 0.060