PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-21:42:50
G01     241.1          29.5               11.8 +/-    1.13      21.0 +/-    1.13  0.030 / 0.030
G03     312.2          53.3                9.5 +/-    0.95      11.6 +/-    0.95  0.040 / 0.030
G14     70.0           35.1               10.5 +/-    1.10      16.6 +/-    1.10  0.040 / 0.040
G16     161.2          25.5               13.6 +/-    1.47      26.2 +/-    1.47  0.030 / 0.050
G22     285.3          73.1               11.5 +/-    0.72      12.0 +/-    0.72  0.130 / 0.190
G23     293.6          24.9               10.2 +/-    1.12      20.0 +/-    1.12  0.080 / 0.180
G26     128.3          45.2               14.3 +/-    0.59      19.2 +/-    0.59  0.050 / 0.140
G31     40.0           50.3               10.4 +/-    0.89      13.0 +/-    0.89  0.050 / 0.120
G32     85.1           17.5               10.4 +/-    1.64      24.3 +/-    1.64  0.100 / 0.170