PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-04:57:40
G01     48.6           23.9               16.7 +/-    2.32      33.5 +/-    2.32  0.040 / 0.050
G06     177.0          24.3                7.8 +/-    1.25      15.5 +/-    1.25  0.060 / 0.040
G07     145.7          13.4                7.0 +/-    2.33      18.0 +/-    2.33  0.210 / 0.260
G11     45.7           19.8                4.9 +/-    2.20      10.7 +/-    2.20  0.140 / 0.240
G13     249.3          31.6                7.9 +/-    2.34      13.4 +/-    2.34  0.040 / 0.050
G15     280.9          16.4                6.4 +/-    1.16      15.4 +/-    1.16  0.040 / 0.050
G17     316.0          79.4                8.3 +/-    0.64       8.4 +/-    0.64  0.050 / 0.050
G19     245.9          62.0                9.3 +/-    0.67      10.4 +/-    0.67  0.040 / 0.040
G28     38.0           58.2                7.2 +/-    2.01       8.3 +/-    2.01  0.170 / 0.350
G30     150.9          46.2               10.1 +/-    0.67      13.4 +/-    0.67  0.120 / 0.410