PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-22:13:00
G03     220.0          61.9                8.6 +/-    0.99       9.6 +/-    0.99  0.040 / 0.070
G07     254.6          13.7                7.7 +/-    3.29      19.8 +/-    3.29  0.050 / 0.060
G09     310.6          30.7                8.0 +/-    1.16      13.9 +/-    1.16  0.200 / 0.460
G14     105.6          11.6                8.1 +/-    2.53      21.8 +/-    2.53  0.210 / 0.530
G16     100.3          62.6                7.9 +/-    1.04       8.8 +/-    1.04  0.040 / 0.050
G22     191.9          45.4                8.1 +/-    0.56      10.8 +/-    0.56  0.040 / 0.060
G23     326.8          56.7                7.5 +/-    1.02       8.8 +/-    1.02  0.040 / 0.030
G26     57.1           45.6                5.5 +/-    0.92       7.4 +/-    0.92  0.030 / 0.040
G31     57.6           12.6                5.7 +/-    0.80      15.0 +/-    0.80  0.050 / 0.050