PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/28-07:12:40
G01     74.7           32.3                4.5 +/-    0.41       7.6 +/-    0.41  0.050 / 0.040
G07     133.9          35.0                7.4 +/-    0.85      11.8 +/-    0.85  0.040 / 0.030
G11     58.7           36.9                4.9 +/-    0.64       7.5 +/-    0.64  0.050 / 0.100
G13     279.6          39.1                4.7 +/-    1.41       6.9 +/-    1.41  0.050 / 0.110
G15     305.6          14.7                0.1 +/-    2.68       0.3 +/-    2.68  0.090 / 0.100
G17     223.7          63.9                9.0 +/-    0.50      10.0 +/-    0.50  0.090 / 0.130
G19     219.5          39.6                6.2 +/-    1.45       9.1 +/-    1.45  0.050 / 0.080
G28     353.3          61.5                5.9 +/-    1.05       6.6 +/-    1.05  0.040 / 0.090
G30     129.0          70.1                7.6 +/-    0.49       8.0 +/-    0.49  0.040 / 0.060