PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-07:42:40
G08     321.0          10.8              -12.2 +/-   26.10     -33.5 +/-   26.10  0.030 / 0.030
G10     305.2          54.6                4.4 +/-    1.16       5.3 +/-    1.16  0.030 / 0.040
G14     210.9          16.3                5.1 +/-    1.70      12.2 +/-    1.70  0.050 / 0.030
G15     45.6           23.0                1.9 +/-    2.13       3.9 +/-    2.13  0.050 / 0.030
G20     3.5            64.8                4.3 +/-    0.71       4.7 +/-    0.71  0.140 / 0.290
G21     110.5          69.3                6.4 +/-    0.70       6.8 +/-    0.70  0.160 / 0.340
G24     91.6           27.8                5.9 +/-    1.67      10.9 +/-    1.67  0.090 / 0.180
G27     297.4          35.0                5.7 +/-    3.10       9.1 +/-    3.10  0.110 / 0.210
G32     213.2          30.6                4.8 +/-    2.32       8.3 +/-    2.32  0.060 / 0.070