PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-21:57:40
G10     290.0          49.3               12.0 +/-    0.58      15.3 +/-    0.58  0.090 / 0.090
G15     48.6           38.2                9.8 +/-    0.44      14.7 +/-    0.44  0.070 / 0.090
G20     339.4          65.3               10.3 +/-    1.04      11.2 +/-    1.04  0.040 / 0.050
G21     75.8           76.6               14.0 +/-    0.54      14.4 +/-    0.54  0.040 / 0.040
G24     100.5          24.2               11.5 +/-    1.30      22.9 +/-    1.30  0.040 / 0.050
G27     306.6          30.9               11.5 +/-    2.37      19.8 +/-    2.37  0.040 / 0.050
G29     168.6          12.9               15.4 +/-    3.94      40.4 +/-    3.94  0.060 / 0.140
G32     208.3          27.9               14.6 +/-    3.28      26.7 +/-    3.28  0.070 / 0.140