PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-02:28:10
G02     33.3           54.9                6.6 +/-    0.63       7.9 +/-    0.63  0.030 / 0.030
G05     137.6          62.0                9.2 +/-    0.54      10.3 +/-    0.54  0.030 / 0.030
G06     52.1           19.2                6.2 +/-    1.88      13.8 +/-    1.88  0.160 / 0.260
G12     206.4          70.6                8.4 +/-    0.67       8.8 +/-    0.67  0.160 / 0.290
G19     99.3           9.7                 7.1 +/-    2.91      19.9 +/-    2.91  0.030 / 0.030
G25     296.8          54.0                7.1 +/-    1.38       8.5 +/-    1.38  0.030 / 0.030
G29     309.1          31.6                6.5 +/-    1.17      11.1 +/-    1.17  0.100 / 0.170