PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/21-18:57:50
G08     315.3          15.6               12.6 +/-    1.99      30.8 +/-    1.99  0.050 / 0.060
G10     316.7          56.9               14.8 +/-    0.99      17.3 +/-    0.99  0.060 / 0.060
G14     214.5          24.3               20.6 +/-    2.58      40.9 +/-    2.58  0.050 / 0.040
G15     45.7           16.1               15.6 +/-    1.54      37.7 +/-    1.54  0.050 / 0.040
G18     27.7           61.8               16.0 +/-    1.78      17.8 +/-    1.78  0.110 / 0.190
G20     80.0           11.4               17.6 +/-    1.86      47.5 +/-    1.86  0.100 / 0.230
G21     125.9          59.7               18.9 +/-    0.33      21.5 +/-    0.33  0.100 / 0.100
G24     84.5           30.1               18.2 +/-    0.91      31.8 +/-    0.91  0.070 / 0.080
G27     283.3          38.0               16.7 +/-    0.69      25.1 +/-    0.69  0.060 / 0.070
G32     217.8          43.0               19.6 +/-    1.27      27.2 +/-    1.27  0.080 / 0.080