PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/04-17:57:50
G08     266.9          18.6                7.9 +/-    1.79      18.0 +/-    1.79  0.300 / 0.260
G10     63.3           56.6                7.6 +/-    0.64       8.9 +/-    0.64  0.180 / 0.220
G11     314.3          13.9                6.0 +/-    4.01      15.2 +/-    4.01  0.060 / 0.050
G14     259.8          62.2                8.9 +/-    0.92       9.9 +/-    0.92  0.040 / 0.050
G20     97.0           33.7                7.9 +/-    0.92      12.9 +/-    0.92  0.070 / 0.170
G21     155.0          15.1                8.1 +/-    2.43      20.2 +/-    2.43  0.130 / 0.180
G24     40.5           10.9                6.2 +/-    3.99      16.9 +/-    3.99  0.190 / 0.560
G27     231.6          16.5                9.1 +/-    3.11      21.9 +/-    3.11  0.220 / 0.650
G31     178.5          29.7                9.4 +/-    1.10      16.5 +/-    1.10  0.110 / 0.140
G32     345.0          74.1                8.3 +/-    0.36       8.6 +/-    0.36  0.110 / 0.130