PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-09:42:50
G01     98.4           28.3                6.7 +/-    1.17      12.2 +/-    1.17  0.040 / 0.060
G07     116.7          50.9                9.3 +/-    1.62      11.6 +/-    1.62  0.040 / 0.050
G08     41.8           17.3                3.0 +/-    1.16       7.1 +/-    1.16  0.050 / 0.080
G11     80.6           43.9                8.4 +/-    0.89      11.5 +/-    0.89  0.040 / 0.060
G13     303.0          33.7                5.3 +/-    1.51       8.5 +/-    1.51  0.030 / 0.050
G17     208.5          42.1                7.9 +/-    1.33      11.1 +/-    1.33  0.030 / 0.050
G18     72.2           24.7                5.9 +/-    0.74      11.6 +/-    0.74  0.070 / 0.120
G19     210.0          20.9                3.1 +/-    1.73       6.8 +/-    1.73  0.080 / 0.120
G28     316.8          59.6                6.2 +/-    0.90       7.1 +/-    0.90  0.080 / 0.160
G30     52.8           80.6                7.4 +/-    0.34       7.5 +/-    0.34  0.070 / 0.160