PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-12:43:00
G01     321.0          12.0              -13.7 +/-   25.20     -36.6 +/-   25.20  0.140 / 0.270
G08     263.0          17.0                6.4 +/-    1.14      15.2 +/-    1.14  0.040 / 0.040
G10     67.9           56.2                6.0 +/-    0.70       7.1 +/-    0.70  0.040 / 0.050
G11     308.5          19.9                3.9 +/-    1.33       8.7 +/-    1.33  0.030 / 0.020
G14     275.9          68.9                6.7 +/-    0.78       7.2 +/-    0.78  0.040 / 0.030
G18     309.2          37.4                5.7 +/-    1.33       8.6 +/-    1.33  0.030 / 0.020
G20     98.7           34.2                5.3 +/-    0.90       8.5 +/-    0.90  0.020 / 0.020
G27     231.4          14.5                5.7 +/-    2.21      14.4 +/-    2.21  0.080 / 0.270
G31     179.5          31.5                7.2 +/-    1.15      12.2 +/-    1.15  0.130 / 0.300
G32     334.5          73.5                6.8 +/-    0.48       7.1 +/-    0.48  0.070 / 0.090