PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-07:58:10
G08     280.0          22.1                5.1 +/-    1.19      10.7 +/-    1.19  0.100 / 0.110
G10     38.5           61.4                3.4 +/-    0.39       3.8 +/-    0.39  0.080 / 0.150
G14     244.2          58.3                7.1 +/-    0.73       8.2 +/-    0.73  0.030 / 0.030
G18     316.6          22.7                2.0 +/-    1.96       4.1 +/-    1.96  0.030 / 0.030
G20     82.3           44.5                4.8 +/-    0.73       6.5 +/-    0.73  0.050 / 0.060
G24     45.6           17.7                1.6 +/-    0.59       3.6 +/-    0.59  0.050 / 0.070
G27     243.1          24.6                4.7 +/-    2.02       9.3 +/-    2.02  0.090 / 0.230
G31     180.9          17.9                4.6 +/-    2.11      10.8 +/-    2.11  0.090 / 0.220
G32     273.5          72.7                6.1 +/-    0.62       6.3 +/-    0.62  0.070 / 0.130