PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-18:13:10
G10     247.2          24.2               10.8 +/-    2.15      21.5 +/-    2.15  0.030 / 0.050
G13     57.2           31.7                9.5 +/-    0.92      16.1 +/-    0.92  0.040 / 0.050
G15     101.9          59.2               11.3 +/-    0.45      12.9 +/-    0.45  0.150 / 0.750
G16     299.6          15.5                5.1 +/-    2.44      12.5 +/-    2.44  0.190 / 0.590
G20     264.6          48.2               11.2 +/-    1.11      14.5 +/-    1.11  0.050 / 0.130
G21     330.3          58.0                9.0 +/-    0.60      10.4 +/-    0.60  0.040 / 0.140
G26     272.3          16.9                8.4 +/-    1.97      19.8 +/-    1.97  0.050 / 0.050
G29     163.1          54.6               11.5 +/-    1.54      13.8 +/-    1.54  0.040 / 0.050