PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-06:27:50
G01     48.8           24.1                4.6 +/-    1.86       9.3 +/-    1.86  0.040 / 0.060
G06     176.7          24.6                5.9 +/-    1.85      11.6 +/-    1.85  0.050 / 0.050
G07     145.7          13.0                6.9 +/-    2.14      18.0 +/-    2.14  0.100 / 0.210
G11     45.5           19.1                5.5 +/-    2.24      12.3 +/-    2.24  0.130 / 0.200
G13     249.4          31.6                5.8 +/-    2.16       9.8 +/-    2.16  0.040 / 0.050
G15     281.7          16.2                5.0 +/-    2.10      12.1 +/-    2.10  0.050 / 0.060
G17     312.3          79.3                8.3 +/-    0.75       8.4 +/-    0.75  0.020 / 0.020
G19     245.8          61.9                8.3 +/-    0.57       9.3 +/-    0.57  0.030 / 0.020
G28     38.7           58.0                7.7 +/-    2.54       8.9 +/-    2.54  0.220 / 0.300
G30     150.7          45.7               10.0 +/-    1.03      13.3 +/-    1.03  0.210 / 0.300