PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-21:28:10
G01     318.4          20.9                8.3 +/-    3.56      17.9 +/-    3.56  0.200 / 0.310
G08     257.7          13.0               11.0 +/-    1.16      28.7 +/-    1.16  0.160 / 0.280
G10     82.6           50.7                9.6 +/-    0.85      12.0 +/-    0.85  0.040 / 0.060
G11     304.2          21.5                9.8 +/-    2.28      20.7 +/-    2.28  0.040 / 0.050
G14     289.7          69.0               11.0 +/-    0.68      11.7 +/-    0.68  0.210 / 0.270
G20     107.2          26.4               11.0 +/-    1.72      20.8 +/-    1.72  0.200 / 0.300
G31     174.7          43.7               13.2 +/-    1.24      18.1 +/-    1.24  0.040 / 0.040
G32     12.0           66.2                9.1 +/-    0.50       9.8 +/-    0.50  0.030 / 0.040