PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-22:42:50
G03     208.5          54.0                9.3 +/-    1.27      11.2 +/-    1.27  0.060 / 0.190
G07     261.4          20.3                9.1 +/-    0.85      19.9 +/-    0.85  0.070 / 0.190
G09     313.2          33.7                6.7 +/-    2.06      11.0 +/-    2.06  0.090 / 0.240
G16     86.8           64.5                8.7 +/-    0.32       9.6 +/-    0.32  0.080 / 0.310
G22     187.7          37.3                9.5 +/-    0.71      14.5 +/-    0.71  0.050 / 0.050
G23     331.5          61.8                8.1 +/-    0.83       9.0 +/-    0.83  0.050 / 0.060
G26     51.8           42.3                5.9 +/-    0.65       8.3 +/-    0.65  0.040 / 0.040
G27     133.4          12.8               10.7 +/-    1.47      28.1 +/-    1.47  0.040 / 0.050
G31     60.8           10.8                5.5 +/-    3.19      15.0 +/-    3.19  0.050 / 0.120