PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/10-01:57:30
G07     10.7           67.7                4.5 +/-    0.85       4.8 +/-    0.85  0.050 / 0.070
G08     64.5           47.9                2.8 +/-    0.67       3.7 +/-    0.67  0.050 / 0.070
G09     174.9          47.4                6.1 +/-    2.05       8.0 +/-    2.05  0.090 / 0.180
G11     135.8          26.6                6.2 +/-    0.99      11.7 +/-    0.99  0.090 / 0.180
G23     160.2          22.2                5.3 +/-    2.36      11.0 +/-    2.36  0.040 / 0.040
G27     41.3           18.5                3.0 +/-    1.25       6.9 +/-    1.25  0.030 / 0.050
G28     251.3          36.1                4.7 +/-    1.00       7.4 +/-    1.00  0.070 / 0.120
G30     315.0          45.9                3.5 +/-    1.04       4.6 +/-    1.04  0.070 / 0.110