PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-23:27:50
G01     318.4          20.8                7.4 +/-    2.04      16.0 +/-    2.04  0.150 / 0.310
G08     258.9          12.9               11.7 +/-    2.26      30.5 +/-    2.26  0.120 / 0.270
G10     82.7           50.7                9.7 +/-    0.72      12.2 +/-    0.72  0.040 / 0.050
G11     303.4          22.1                8.0 +/-    1.82      16.7 +/-    1.82  0.040 / 0.060
G14     292.8          69.7               10.1 +/-    0.54      10.7 +/-    0.54  0.250 / 0.350
G18     303.4          41.9                9.9 +/-    0.73      13.9 +/-    0.73  0.220 / 0.330
G20     107.1          27.0               10.6 +/-    1.68      19.8 +/-    1.68  0.080 / 0.080
G31     174.2          44.3               12.8 +/-    0.72      17.4 +/-    0.72  0.050 / 0.090
G32     10.9           66.5                8.2 +/-    0.46       8.9 +/-    0.46  0.080 / 0.280