PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-22:27:40
G03     211.7          56.9                8.8 +/-    0.69      10.3 +/-    0.69  0.100 / 0.240
G07     258.9          18.5                9.5 +/-    3.21      21.6 +/-    3.21  0.090 / 0.210
G09     311.7          31.1                7.9 +/-    1.16      13.5 +/-    1.16  0.040 / 0.040
G16     95.3           64.8                9.2 +/-    1.09      10.0 +/-    1.09  0.030 / 0.050
G22     188.7          40.4                8.3 +/-    1.45      12.0 +/-    1.45  0.150 / 0.410
G23     328.9          59.2                7.4 +/-    0.85       8.5 +/-    0.85  0.040 / 0.060
G26     54.3           44.8                6.5 +/-    0.37       8.8 +/-    0.37  0.050 / 0.060
G27     135.7          10.7              -14.0 +/-   23.59     -38.6 +/-   23.59  0.040 / 0.090
G31     58.9           13.0                5.5 +/-    2.27      14.4 +/-    2.27  0.090 / 0.090