PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/03-21:43:10
G07     313.2          50.6                9.3 +/-    0.82      11.6 +/-    0.82  0.050 / 0.070
G08     122.0          42.7                8.9 +/-    0.54      12.3 +/-    0.54  0.080 / 0.060
G09     293.5          81.1                7.7 +/-    0.38       7.8 +/-    0.38  0.280 / 0.420
G16     42.2           25.2                7.7 +/-    3.34      15.0 +/-    3.34  0.060 / 0.050
G23     146.8          63.3                9.4 +/-    0.37      10.4 +/-    0.37  0.040 / 0.070
G27     79.6           38.2                9.0 +/-    1.09      13.5 +/-    1.09  0.110 / 0.180
G28     224.9          11.7               -3.4 +/-   17.40      -9.1 +/-   17.40  0.130 / 0.230
G30     287.3          23.0                9.8 +/-    1.73      20.1 +/-    1.73  0.040 / 0.020