PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-14:27:50
G03     195.3          39.6                9.2 +/-    0.71      13.5 +/-    0.71  0.090 / 0.150
G07     272.8          30.7                9.1 +/-    2.17      15.7 +/-    2.17  0.110 / 0.200
G08     154.9          10.5              -10.4 +/-   31.55     -28.7 +/-   31.55  0.090 / 0.140
G09     316.6          40.3                7.1 +/-    1.00      10.3 +/-    1.00  0.060 / 0.110
G16     64.3           60.8                7.9 +/-    0.53       8.9 +/-    0.53  0.080 / 0.070
G22     181.4          23.0                9.3 +/-    0.72      19.1 +/-    0.72  0.070 / 0.090
G23     351.1          74.2                7.7 +/-    1.40       8.0 +/-    1.40  0.030 / 0.030
G26     45.8           32.3                6.0 +/-    1.30      10.0 +/-    1.30  0.040 / 0.030
G27     123.6          20.6               10.4 +/-    1.45      22.5 +/-    1.45  0.080 / 0.160