PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-21:12:50
G01     244.7          32.3                9.9 +/-    1.59      16.5 +/-    1.59  0.110 / 0.100
G03     314.6          49.0                5.7 +/-    1.54       7.3 +/-    1.54  0.080 / 0.120
G14     66.4           36.9                5.8 +/-    0.68       8.9 +/-    0.68  0.080 / 0.300
G16     160.8          22.9                7.5 +/-    3.80      15.3 +/-    3.80  0.100 / 0.290
G18     213.6          21.7               10.0 +/-    1.77      21.1 +/-    1.77  0.050 / 0.120
G22     294.9          70.4                6.8 +/-    0.72       7.1 +/-    0.72  0.050 / 0.150
G23     290.1          21.1                8.3 +/-    1.78      17.8 +/-    1.78  0.070 / 0.270
G26     133.8          41.9                9.4 +/-    0.86      13.2 +/-    0.86  0.060 / 0.260
G31     39.7           56.7                5.3 +/-    0.33       6.3 +/-    0.33  0.040 / 0.030
G32     81.6           20.1                6.6 +/-    1.03      14.4 +/-    1.03  0.040 / 0.040