PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-21:57:50
G05     48.6           20.4               11.6 +/-    1.17      25.3 +/-    1.17  0.050 / 0.080
G10     237.4          12.8               17.1 +/-    2.15      44.8 +/-    2.15  0.060 / 0.070
G13     75.4           37.4               15.2 +/-    0.64      23.1 +/-    0.64  0.120 / 0.300
G15     123.1          53.0               16.8 +/-    0.90      20.4 +/-    0.90  0.110 / 0.300
G16     314.9          11.4               11.1 +/-    2.40      29.9 +/-    2.40  0.150 / 0.560
G18     247.0          43.1               17.7 +/-    0.92      24.6 +/-    0.92  0.150 / 0.500
G20     30.3           64.0               15.1 +/-    0.83      16.6 +/-    0.83  0.140 / 0.470
G21     314.9          48.8               14.0 +/-    1.04      18.0 +/-    1.04  0.160 / 0.460
G26     288.5          19.4               14.0 +/-    1.34      31.2 +/-    1.34  0.070 / 0.170
G29     155.4          66.8               14.1 +/-    0.69      15.2 +/-    0.69  0.070 / 0.170