PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-20:42:50
G01     318.5          20.7                6.2 +/-    2.41      13.4 +/-    2.41  0.040 / 0.040
G08     257.6          13.2                8.9 +/-    3.66      23.2 +/-    3.66  0.040 / 0.050
G10     82.0           50.9                9.5 +/-    0.51      11.8 +/-    0.51  0.170 / 0.370
G14     287.4          68.5               10.7 +/-    0.56      11.4 +/-    0.56  0.180 / 0.300
G20     107.0          26.4               11.3 +/-    0.73      21.4 +/-    0.73  0.060 / 0.060
G31     175.0          43.0               12.2 +/-    0.70      17.0 +/-    0.70  0.060 / 0.050
G32     11.6           66.4                9.2 +/-    0.42      10.0 +/-    0.42  0.250 / 0.390