PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/21-01:12:30
G10     308.0          55.5                7.6 +/-    1.03       9.0 +/-    1.03  0.170 / 0.230
G14     211.5          16.2               10.3 +/-    2.38      24.8 +/-    2.38  0.160 / 0.300
G15     45.6           22.6                5.7 +/-    2.16      11.7 +/-    2.16  0.040 / 0.040
G20     5.0            64.7                8.3 +/-    0.65       9.1 +/-    0.65  0.040 / 0.040
G21     110.9          70.8                9.7 +/-    0.46      10.2 +/-    0.46  0.060 / 0.080
G24     92.1           28.5                8.4 +/-    0.88      15.1 +/-    0.88  0.060 / 0.060
G27     294.9          36.2                8.0 +/-    1.68      12.5 +/-    1.68  0.040 / 0.040
G32     212.9          36.4                9.8 +/-    1.73      15.2 +/-    1.73  0.050 / 0.060