PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-21:58:00
G01     235.1          25.0               10.1 +/-    2.06      19.7 +/-    2.06  0.030 / 0.030
G03     306.5          59.5               10.5 +/-    1.23      12.0 +/-    1.23  0.030 / 0.030
G14     76.5           31.0               10.4 +/-    1.45      17.8 +/-    1.45  0.040 / 0.040
G16     157.9          32.1               12.6 +/-    1.55      21.2 +/-    1.55  0.050 / 0.070
G22     259.5          75.5               12.4 +/-    0.75      12.7 +/-    0.75  0.060 / 0.110
G23     298.7          29.2               11.2 +/-    2.01      20.0 +/-    2.01  0.060 / 0.110
G26     119.4          49.8               14.0 +/-    0.61      17.7 +/-    0.61  0.060 / 0.120
G31     41.1           43.9               10.3 +/-    1.06      14.2 +/-    1.06  0.070 / 0.130
G32     90.5           13.4               11.1 +/-    3.47      28.6 +/-    3.47  0.170 / 0.210