PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-08:42:50
G01     110.9          22.0                5.8 +/-    1.50      12.2 +/-    1.50  0.030 / 0.040
G07     98.5           60.7                7.8 +/-    0.89       8.8 +/-    0.89  0.030 / 0.030
G08     43.2           27.5                2.8 +/-    1.58       5.1 +/-    1.58  0.120 / 0.120
G09     175.1          18.5                5.9 +/-    3.08      13.4 +/-    3.08  0.120 / 0.120
G11     98.7           43.6                8.8 +/-    0.62      12.1 +/-    0.62  0.110 / 0.160
G13     313.1          26.1                4.0 +/-    1.98       7.7 +/-    1.98  0.160 / 0.180
G17     203.4          29.7                7.3 +/-    1.68      12.9 +/-    1.68  0.070 / 0.170
G18     85.8           23.1                5.1 +/-    1.83      10.3 +/-    1.83  0.090 / 0.180
G28     294.2          55.6                6.6 +/-    1.09       7.8 +/-    1.09  0.040 / 0.030
G30     356.4          73.6                6.8 +/-    0.93       7.1 +/-    0.93  0.030 / 0.030