PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-05:42:50
G07     316.1          51.7                5.5 +/-    0.84       6.9 +/-    0.84  0.090 / 0.200
G08     123.1          44.7                8.1 +/-    1.28      10.9 +/-    1.28  0.090 / 0.200
G09     253.8          84.0                5.6 +/-    0.61       5.6 +/-    0.61  0.040 / 0.050
G16     43.3           16.9                2.4 +/-    0.94       5.6 +/-    0.94  0.030 / 0.050
G23     148.6          55.6                7.5 +/-    1.76       8.9 +/-    1.76  0.040 / 0.080
G27     71.4           36.6                4.4 +/-    1.06       6.7 +/-    1.06  0.040 / 0.060
G28     226.6          11.1               -0.2 +/-   19.76      -0.5 +/-   19.76  0.030 / 0.060
G30     290.0          24.6                5.8 +/-    1.47      11.4 +/-    1.47  0.050 / 0.050