PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-19:28:10
G08     306.8          20.2               20.0 +/-    2.57      43.7 +/-    2.57  0.060 / 0.070
G10     335.6          60.5                8.9 +/-    0.38      10.0 +/-    0.38  0.060 / 0.080
G14     219.7          34.0               12.2 +/-    1.58      19.8 +/-    1.58  0.050 / 0.090
G18     44.9           57.4                9.8 +/-    0.41      11.4 +/-    0.41  0.040 / 0.090
G21     136.4          50.1               14.3 +/-    1.65      18.0 +/-    1.65  0.060 / 0.070
G24     72.3           30.4               10.8 +/-    0.72      18.8 +/-    0.72  0.050 / 0.070
G27     269.7          37.0               11.5 +/-    1.35      17.5 +/-    1.35  0.060 / 0.130
G32     225.9          53.0               13.8 +/-    1.21      16.8 +/-    1.21  0.060 / 0.120