PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/25-05:57:50
G01     117.7          17.2                6.3 +/-    0.74      15.0 +/-    0.74  0.030 / 0.030
G07     80.2           66.2                5.9 +/-    0.46       6.4 +/-    0.46  0.040 / 0.030
G08     45.5           32.7                2.8 +/-    0.59       4.6 +/-    0.59  0.060 / 0.090
G09     175.2          25.0                6.9 +/-    1.60      13.5 +/-    1.60  0.060 / 0.080
G11     110.8          41.0                7.4 +/-    0.80      10.6 +/-    0.80  0.110 / 0.390
G13     317.4          20.2                4.7 +/-    2.07      10.2 +/-    2.07  0.110 / 0.380
G17     200.9          23.0                6.4 +/-    1.60      13.1 +/-    1.60  0.030 / 0.040
G28     280.7          51.5                7.8 +/-    1.11       9.6 +/-    1.11  0.030 / 0.040
G30     339.2          66.0                4.6 +/-    0.96       5.0 +/-    0.96  0.060 / 0.090