PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-09:42:50
G10     277.3          44.4                6.8 +/-    0.93       9.3 +/-    0.93  0.040 / 0.040
G13     38.5           10.9                0.0 +/-    7.31       0.0 +/-    7.31  0.040 / 0.040
G15     51.4           40.9                4.1 +/-    0.79       5.9 +/-    0.79  0.100 / 0.340
G20     316.5          63.6                6.2 +/-    1.17       6.8 +/-    1.17  0.100 / 0.410
G21     47.6           75.6                6.1 +/-    0.50       6.3 +/-    0.50  0.090 / 0.050
G24     110.9          19.3                6.2 +/-    0.93      13.9 +/-    0.93  0.080 / 0.050
G27     315.2          23.6                4.4 +/-    1.20       8.8 +/-    1.20  0.160 / 0.390
G29     165.8          17.9                6.3 +/-    2.15      14.5 +/-    2.15  0.330 / 0.290
G32     206.6          13.6                5.3 +/-    2.56      13.7 +/-    2.56  0.110 / 0.150