PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-06:42:50
G07     328.1          56.7                4.1 +/-    0.61       4.8 +/-    0.61  0.030 / 0.040
G08     111.9          49.9                6.4 +/-    0.92       8.1 +/-    0.92  0.030 / 0.050
G09     198.0          78.6                4.2 +/-    0.59       4.3 +/-    0.59  0.060 / 0.080
G11     150.1          10.4               -4.5 +/-    9.98     -12.5 +/-    9.98  0.050 / 0.080
G16     45.5           9.9                -0.3 +/-    4.34      -0.8 +/-    4.34  0.030 / 0.020
G23     153.0          45.9                6.6 +/-    0.48       8.8 +/-    0.48  0.030 / 0.020
G27     61.0           34.2                5.1 +/-    1.94       8.1 +/-    1.94  0.040 / 0.040
G28     231.7          18.5                5.0 +/-    2.03      11.5 +/-    2.03  0.040 / 0.040
G30     296.9          30.5                4.8 +/-    1.30       8.3 +/-    1.30  0.110 / 0.100