PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-22:12:30
G07     320.1          52.6                8.4 +/-    1.43      10.2 +/-    1.43  0.110 / 0.320
G08     116.9          48.2               12.2 +/-    1.02      15.7 +/-    1.02  0.100 / 0.270
G09     232.1          82.0                8.6 +/-    1.05       8.7 +/-    1.05  0.170 / 0.690
G16     44.1           15.3                8.0 +/-    1.26      19.7 +/-    1.26  0.190 / 0.660
G23     151.3          50.0               10.0 +/-    0.94      12.6 +/-    0.94  0.040 / 0.060
G27     63.9           35.0                9.1 +/-    0.91      14.5 +/-    0.91  0.040 / 0.060
G28     231.0          22.8               12.5 +/-    1.31      25.6 +/-    1.31  0.060 / 0.090
G30     297.2          33.0                8.0 +/-    1.32      13.1 +/-    1.32  0.080 / 0.090