PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-18:27:40
G10     247.9          24.7               12.4 +/-    1.33      24.4 +/-    1.33  0.110 / 0.340
G13     56.5           31.3                9.5 +/-    2.16      16.3 +/-    2.16  0.100 / 0.340
G15     100.5          59.4               11.3 +/-    0.92      12.9 +/-    0.92  0.100 / 0.100
G16     298.8          15.6                7.8 +/-    1.51      19.2 +/-    1.51  0.070 / 0.110
G20     265.6          48.7               10.6 +/-    3.80      13.6 +/-    3.80  0.060 / 0.040
G21     331.1          58.4               10.2 +/-    0.47      11.7 +/-    0.47  0.050 / 0.040
G26     271.5          16.7                9.9 +/-    1.42      23.7 +/-    1.42  0.050 / 0.050
G29     163.4          53.8               12.8 +/-    0.55      15.5 +/-    0.55  0.030 / 0.040