PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-19:27:30
G10     245.6          21.4               16.3 +/-    2.06      34.6 +/-    2.06  0.090 / 0.160
G13     61.0           34.3               15.5 +/-    0.89      24.9 +/-    0.89  0.080 / 0.150
G15     98.6           57.4               15.9 +/-    0.78      18.5 +/-    0.78  0.050 / 0.050
G16     306.2          13.2               14.2 +/-    2.37      36.9 +/-    2.37  0.070 / 0.060
G18     260.9          52.6               15.8 +/-    0.66      19.4 +/-    0.66  0.120 / 0.340
G20     37.9           54.4               14.5 +/-    0.59      17.4 +/-    0.59  0.150 / 0.310
G21     329.0          57.7               14.6 +/-    0.58      16.9 +/-    0.58  0.040 / 0.060
G26     278.8          17.0               15.2 +/-    1.48      35.9 +/-    1.48  0.030 / 0.050
G29     160.2          51.4               15.6 +/-    1.45      19.3 +/-    1.45  0.120 / 0.380