PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/01-18:42:50
G01     317.1          23.6                7.9 +/-    2.49      15.9 +/-    2.49  0.140 / 0.400
G08     253.7          11.6                6.9 +/-    6.49      18.7 +/-    6.49  0.150 / 0.400
G10     86.4           49.0                8.6 +/-    0.79      10.9 +/-    0.79  0.040 / 0.050
G11     302.8          21.7                8.1 +/-    3.24      17.1 +/-    3.24  0.040 / 0.050
G14     295.0          69.1                8.9 +/-    0.85       9.5 +/-    0.85  0.040 / 0.050
G20     109.7          23.4                8.9 +/-    0.97      18.0 +/-    0.97  0.030 / 0.040
G22     302.8          11.9                7.5 +/-    3.17      20.0 +/-    3.17  0.230 / 0.620
G31     175.0          45.7               11.8 +/-    1.72      15.8 +/-    1.72  0.160 / 0.550
G32     17.5           63.8                8.4 +/-    0.69       9.2 +/-    0.69  0.060 / 0.060