PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/31-23:12:50
G03     206.1          51.3               10.2 +/-    0.78      12.6 +/-    0.78  0.080 / 0.090
G07     262.3          19.4                8.6 +/-    0.94      19.1 +/-    0.94  0.080 / 0.080
G09     313.2          32.9                8.1 +/-    1.82      13.4 +/-    1.82  0.030 / 0.030
G16     84.0           65.6               10.0 +/-    0.70      10.8 +/-    0.70  0.030 / 0.040
G22     186.5          35.4                9.5 +/-    1.53      14.9 +/-    1.53  0.100 / 0.090
G23     336.3          65.3                8.7 +/-    0.54       9.5 +/-    0.54  0.070 / 0.080
G26     49.4           39.3                7.4 +/-    1.18      10.9 +/-    1.18  0.180 / 0.280
G27     128.1          15.5               10.2 +/-    2.42      25.2 +/-    2.42  0.210 / 0.270