PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-18:27:50
G10     264.2          35.8               18.8 +/-    1.19      29.3 +/-    1.19  0.120 / 0.140
G13     43.8           21.5               12.6 +/-    1.45      26.7 +/-    1.45  0.090 / 0.120
G15     61.3           49.7               16.3 +/-    1.06      20.7 +/-    1.06  0.030 / 0.030
G16     287.5          11.5               16.2 +/-    3.93      43.8 +/-    3.93  0.030 / 0.030
G18     297.6          64.3               17.8 +/-    0.33      19.5 +/-    0.33  0.050 / 0.070
G20     52.1           37.9               15.2 +/-    0.99      22.9 +/-    0.99  0.060 / 0.070
G21     7.2            71.9               18.2 +/-    0.57      19.0 +/-    0.57  0.190 / 0.230
G24     123.6          12.4               20.9 +/-    2.13      55.4 +/-    2.13  0.140 / 0.360
G27     319.0          18.2               14.9 +/-    2.14      34.3 +/-    2.14  0.220 / 0.200
G29     165.0          28.0               22.5 +/-    1.70      41.1 +/-    1.70  0.080 / 0.230