PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-23:57:40
G03     212.5          57.0                8.1 +/-    0.52       9.5 +/-    0.52  0.040 / 0.080
G07     258.0          16.2                8.4 +/-    1.79      20.3 +/-    1.79  0.040 / 0.070
G09     310.7          28.5                4.2 +/-    1.09       7.6 +/-    1.09  0.080 / 0.240
G16     101.7          66.2                8.5 +/-    0.46       9.2 +/-    0.46  0.100 / 0.250
G22     188.7          41.4                9.2 +/-    2.27      13.1 +/-    2.27  0.160 / 0.370
G23     330.3          60.1                5.0 +/-    0.96       5.6 +/-    0.96  0.110 / 0.340
G26     53.8           44.3                4.9 +/-    1.24       6.7 +/-    1.24  0.040 / 0.040
G27     132.2          11.8                9.9 +/-    3.66      26.5 +/-    3.66  0.050 / 0.040
G31     59.4           11.2                5.0 +/-    2.06      13.6 +/-    2.06  0.120 / 0.300