PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-14:57:50
G01     320.9          11.0              -11.1 +/-   29.38     -30.3 +/-   29.38  0.160 / 0.380
G08     267.3          16.8                8.2 +/-    1.59      19.5 +/-    1.59  0.160 / 0.410
G10     65.5           57.7                7.2 +/-    1.04       8.3 +/-    1.04  0.160 / 0.390
G11     311.5          16.7                6.2 +/-    2.98      14.7 +/-    2.98  0.160 / 0.490
G14     271.1          66.3                7.7 +/-    0.50       8.4 +/-    0.50  0.050 / 0.100
G21     154.3          10.7                9.9 +/-    2.85      27.1 +/-    2.85  0.080 / 0.080
G27     229.0          13.7                7.2 +/-    2.12      18.4 +/-    2.12  0.030 / 0.040
G31     177.4          33.7                8.6 +/-    2.15      14.0 +/-    2.15  0.030 / 0.050
G32     349.9          72.5                7.5 +/-    0.73       7.8 +/-    0.73  0.030 / 0.030