PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-06:12:50
G01     54.9           27.7                3.7 +/-    2.10       6.8 +/-    2.10  0.040 / 0.040
G06     178.3          18.0                4.5 +/-    2.79      10.4 +/-    2.79  0.030 / 0.040
G07     143.2          19.3                6.4 +/-    1.83      14.2 +/-    1.83  0.110 / 0.200
G11     47.8           24.7                5.6 +/-    2.36      11.1 +/-    2.36  0.120 / 0.240
G13     257.0          35.0                9.5 +/-    0.66      15.1 +/-    0.66  0.050 / 0.060
G15     288.3          17.0                4.3 +/-    1.56      10.3 +/-    1.56  0.040 / 0.060
G17     272.5          78.7                8.9 +/-    0.57       9.1 +/-    0.57  0.030 / 0.030
G19     235.7          56.1                9.4 +/-    2.11      11.1 +/-    2.11  0.030 / 0.030
G28     26.3           59.7                7.2 +/-    0.78       8.2 +/-    0.78  0.080 / 0.140
G30     147.0          52.9               10.7 +/-    0.73      13.1 +/-    0.73  0.110 / 0.170