PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/20-03:12:50
G08     275.2          19.6                8.3 +/-    1.65      18.4 +/-    1.65  0.120 / 0.250
G10     54.4           58.9                9.2 +/-    0.95      10.5 +/-    0.95  0.110 / 0.270
G14     255.6          62.8               11.4 +/-    0.57      12.6 +/-    0.57  0.050 / 0.050
G18     314.6          28.7                6.6 +/-    1.38      11.9 +/-    1.38  0.050 / 0.060
G20     90.6           40.1               10.0 +/-    0.98      14.5 +/-    0.98  0.160 / 0.350
G21     154.4          20.6               10.2 +/-    1.54      22.1 +/-    1.54  0.400 / 0.420
G24     42.1           13.5                5.6 +/-    3.80      14.3 +/-    3.80  0.110 / 0.120
G27     235.9          19.5               11.6 +/-    4.19      25.9 +/-    4.19  0.090 / 0.110
G31     178.2          26.6               13.6 +/-    1.75      25.7 +/-    1.75  0.030 / 0.030
G32     314.7          75.9               10.1 +/-    0.60      10.4 +/-    0.60  0.030 / 0.030