PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-21:58:10
G01     221.9          12.9                6.6 +/-    3.54      17.4 +/-    3.54  0.140 / 0.860
G03     269.9          70.0                8.7 +/-    0.77       9.2 +/-    0.77  0.180 / 0.590
G09     298.2          13.2                5.3 +/-   19.77      13.6 +/-   19.77  0.040 / 0.060
G14     92.0           19.8                9.8 +/-    1.77      21.7 +/-    1.77  0.040 / 0.040
G16     142.1          50.1               11.6 +/-    0.47      14.7 +/-    0.47  0.120 / 0.240
G22     206.1          65.3                9.8 +/-    0.47      10.6 +/-    0.47  0.120 / 0.290
G23     310.6          39.8                8.6 +/-    0.95      12.5 +/-    0.95  0.040 / 0.040
G26     90.2           55.6                9.3 +/-    1.15      11.0 +/-    1.15  0.060 / 0.030
G31     46.6           30.8                7.9 +/-    0.96      13.7 +/-    0.96  0.060 / 0.080