PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-21:43:00
G03     187.0          14.2                9.3 +/-    2.62      23.5 +/-    2.62  0.050 / 0.080
G07     296.2          40.6                8.5 +/-    0.76      12.2 +/-    0.76  0.040 / 0.080
G08     139.0          32.4               10.2 +/-    1.10      16.9 +/-    1.10  0.070 / 0.100
G09     318.1          67.8                7.7 +/-    0.72       8.2 +/-    0.72  0.080 / 0.100
G16     41.8           34.2                7.0 +/-    1.41      11.3 +/-    1.41  0.040 / 0.080
G23     131.5          72.6                9.8 +/-    0.43      10.2 +/-    0.43  0.040 / 0.080
G27     90.9           35.7                9.3 +/-    0.50      14.5 +/-    0.50  0.140 / 0.320
G30     279.9          19.8                8.0 +/-    1.28      17.8 +/-    1.28  0.190 / 0.450