PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-06:57:40
G08     321.2          10.5              -13.9 +/-   27.42     -38.2 +/-   27.42  0.030 / 0.040
G10     305.3          54.7                4.7 +/-    1.48       5.6 +/-    1.48  0.030 / 0.040
G14     211.0          16.2                6.4 +/-    3.12      15.5 +/-    3.12  0.090 / 0.100
G15     45.5           23.0                2.8 +/-    0.41       5.7 +/-    0.41  0.130 / 0.100
G20     3.4            64.8                3.9 +/-    0.55       4.3 +/-    0.55  0.040 / 0.040
G21     110.1          69.7                5.9 +/-    0.92       6.2 +/-    0.92  0.050 / 0.040
G24     91.9           27.8                6.0 +/-    1.25      11.0 +/-    1.25  0.100 / 0.120
G27     297.2          35.1                5.7 +/-    0.62       9.0 +/-    0.62  0.090 / 0.130
G32     213.0          31.8                6.1 +/-    1.30      10.2 +/-    1.30  0.130 / 0.280