PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-19:42:50
G03     210.1          57.9               12.7 +/-    0.85      14.6 +/-    0.85  0.060 / 0.060
G07     255.8          14.0               11.3 +/-    2.74      28.7 +/-    2.74  0.040 / 0.060
G09     309.3          26.0               10.5 +/-    1.21      20.1 +/-    1.21  0.030 / 0.040
G16     101.3          64.8               14.3 +/-    1.34      15.7 +/-    1.34  0.040 / 0.030
G22     187.8          42.4               12.4 +/-    0.62      17.3 +/-    0.62  0.160 / 0.190
G23     330.4          59.8               11.9 +/-    0.39      13.6 +/-    0.39  0.160 / 0.300
G26     54.6           44.1               11.4 +/-    0.75      15.5 +/-    0.75  0.160 / 0.410
G27     134.3          10.0               -6.4 +/-   36.62     -17.7 +/-   36.62  0.180 / 0.370
G31     58.7           10.8                9.5 +/-    3.22      26.1 +/-    3.22  0.030 / 0.040