PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/04-09:43:00
G01     111.7          21.6                3.2 +/-    0.82       6.7 +/-    0.82  0.030 / 0.040
G07     97.8           60.7                5.7 +/-    0.86       6.4 +/-    0.86  0.030 / 0.040
G08     43.6           28.9                3.1 +/-    1.68       5.6 +/-    1.68  0.080 / 0.120
G09     175.6          19.6                6.3 +/-    1.33      14.0 +/-    1.33  0.090 / 0.160
G11     99.1           43.3                5.6 +/-    0.38       7.7 +/-    0.38  0.080 / 0.180
G13     313.5          25.6                2.3 +/-    1.94       4.4 +/-    1.94  0.090 / 0.170
G17     203.5          28.4                5.5 +/-    1.39       9.9 +/-    1.39  0.030 / 0.030
G18     86.5           23.0                4.1 +/-    1.16       8.4 +/-    1.16  0.030 / 0.030
G28     293.6          55.6                3.7 +/-    1.18       4.4 +/-    1.18  0.100 / 0.170
G30     356.8          73.5                4.1 +/-    0.94       4.2 +/-    0.94  0.110 / 0.170