PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-21:42:30
G01     221.7          12.8                8.6 +/-    3.57      22.5 +/-    3.57  0.180 / 0.460
G03     269.1          70.1                8.7 +/-    0.64       9.1 +/-    0.64  0.100 / 0.220
G09     298.3          13.2                5.1 +/-   16.38      13.3 +/-   16.38  0.110 / 0.260
G14     92.1           19.7                5.2 +/-    1.85      11.5 +/-    1.85  0.110 / 0.220
G16     142.2          50.2               11.0 +/-    0.69      13.8 +/-    0.69  0.040 / 0.040
G22     205.6          65.1                8.9 +/-    0.73       9.7 +/-    0.73  0.050 / 0.040
G23     310.7          40.0                7.9 +/-    0.94      11.5 +/-    0.94  0.040 / 0.050
G26     90.2           55.7                9.1 +/-    0.98      10.7 +/-    0.98  0.050 / 0.050
G31     46.6           30.9                6.6 +/-    0.92      11.3 +/-    0.92  0.050 / 0.070