PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-17:28:00
G01     317.3          23.3                6.6 +/-    1.56      13.4 +/-    1.56  0.210 / 0.330
G08     253.7          11.9                8.0 +/-   15.64      21.4 +/-   15.64  0.190 / 0.400
G10     85.6           49.2               10.1 +/-    0.89      12.9 +/-    0.89  0.040 / 0.040
G14     295.0          69.4                8.0 +/-    0.55       8.5 +/-    0.55  0.040 / 0.040
G20     109.4          23.4               10.8 +/-    1.21      22.0 +/-    1.21  0.230 / 0.370
G22     302.6          11.8                5.7 +/-   10.41      15.3 +/-   10.41  0.240 / 0.340
G31     175.8          44.5               10.5 +/-    0.56      14.2 +/-    0.56  0.040 / 0.040
G32     16.8           64.1                8.2 +/-    0.67       9.0 +/-    0.67  0.050 / 0.040