PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-04:58:10
G01     94.1           29.3                7.1 +/-    1.28      12.6 +/-    1.28  0.040 / 0.040
G07     119.5          50.3                7.7 +/-    1.33       9.7 +/-    1.33  0.040 / 0.040
G08     41.7           11.7                2.3 +/-    0.85       6.2 +/-    0.85  0.110 / 0.180
G11     78.7           44.7                7.4 +/-    0.62      10.0 +/-    0.62  0.200 / 0.210
G13     299.7          35.4                7.4 +/-    2.01      11.7 +/-    2.01  0.040 / 0.080
G17     209.3          48.1                8.0 +/-    1.32      10.3 +/-    1.32  0.050 / 0.080
G19     211.0          24.2                7.1 +/-    1.62      14.1 +/-    1.62  0.090 / 0.200
G28     319.9          59.8                6.8 +/-    1.01       7.8 +/-    1.01  0.070 / 0.170
G30     58.5           81.5                6.4 +/-    1.06       6.4 +/-    1.06  0.040 / 0.060