PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-09:12:30
G10     274.4          43.0                6.5 +/-    1.91       9.0 +/-    1.91  0.030 / 0.030
G13     39.2           12.8                3.1 +/-    2.32       8.1 +/-    2.32  0.030 / 0.030
G15     53.0           42.9                4.6 +/-    0.97       6.4 +/-    0.97  0.090 / 0.260
G20     311.1          62.9                5.6 +/-    0.84       6.2 +/-    0.84  0.120 / 0.230
G21     36.5           75.3                6.2 +/-    0.83       6.4 +/-    0.83  0.080 / 0.060
G24     113.3          18.0                5.6 +/-    0.81      12.9 +/-    0.81  0.090 / 0.060
G27     316.6          21.9                3.5 +/-    2.04       7.4 +/-    2.04  0.230 / 0.210
G29     165.6          20.0                6.4 +/-    3.17      14.2 +/-    3.17  0.290 / 0.400
G32     206.2          11.2              -10.3 +/-   27.14     -28.0 +/-   27.14  0.090 / 0.190