PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-09:12:30
G02     18.1           66.9                3.5 +/-    0.32       3.8 +/-    0.32  0.040 / 0.060
G05     160.0          44.4                7.2 +/-    0.58       9.7 +/-    0.58  0.050 / 0.050
G06     45.0           29.2                4.0 +/-    1.16       7.2 +/-    1.16  0.030 / 0.030
G12     255.5          81.1                4.6 +/-    0.95       4.7 +/-    0.95  0.040 / 0.020
G19     86.1           17.8                6.0 +/-    1.37      14.0 +/-    1.37  0.050 / 0.040
G24     220.9          14.6                5.1 +/-    2.97      12.7 +/-    2.97  0.060 / 0.040
G25     312.9          39.9                3.5 +/-    0.86       5.1 +/-    0.86  0.090 / 0.320
G29     294.0          15.3                3.5 +/-    1.45       8.5 +/-    1.45  0.090 / 0.330