PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/21-23:58:00
G01     241.1          29.5                8.8 +/-    1.02      15.5 +/-    1.02  0.040 / 0.020
G03     312.5          52.0                7.1 +/-    0.66       8.8 +/-    0.66  0.040 / 0.030
G14     70.5           34.5                6.3 +/-    0.81      10.1 +/-    0.81  0.120 / 0.130
G16     162.8          24.4               10.4 +/-    1.27      20.6 +/-    1.27  0.120 / 0.130
G22     286.5          72.7                7.8 +/-    0.80       8.1 +/-    0.80  0.030 / 0.040
G23     293.3          24.3                7.7 +/-    0.97      15.3 +/-    0.97  0.050 / 0.040
G26     130.5          44.8               11.3 +/-    1.19      15.3 +/-    1.19  0.100 / 0.180
G31     39.4           52.1                6.9 +/-    0.73       8.5 +/-    0.73  0.100 / 0.210
G32     84.7           18.4                6.3 +/-    1.98      14.3 +/-    1.98  0.090 / 0.200