PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-04:27:50
G01     114.2          19.5                7.9 +/-    1.32      17.7 +/-    1.32  0.030 / 0.030
G07     88.0           64.8                5.3 +/-    0.40       5.7 +/-    0.40  0.030 / 0.030
G08     43.7           28.5                3.1 +/-    0.39       5.5 +/-    0.39  0.060 / 0.080
G09     174.0          20.4                5.9 +/-    1.38      12.8 +/-    1.38  0.060 / 0.080
G11     107.0          42.7                6.9 +/-    0.74       9.6 +/-    0.74  0.050 / 0.080
G13     315.6          23.1                1.3 +/-    2.12       2.7 +/-    2.12  0.050 / 0.100
G17     201.4          27.5                6.8 +/-    2.19      12.5 +/-    2.19  0.060 / 0.070
G28     285.8          52.9                5.2 +/-    0.72       6.3 +/-    0.72  0.050 / 0.060
G30     343.2          68.7                3.4 +/-    0.68       3.6 +/-    0.68  0.030 / 0.050