PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-13:27:40
G01     226.2          17.8                6.0 +/-    3.24      14.0 +/-    3.24  0.040 / 0.100
G14     85.8           24.1                7.6 +/-    1.48      15.2 +/-    1.48  0.080 / 0.120
G16     151.5          41.8                9.3 +/-    0.92      13.1 +/-    0.92  0.180 / 0.350
G22     204.9          69.1                8.2 +/-    0.71       8.7 +/-    0.71  0.110 / 0.310
G23     306.7          36.9                5.5 +/-    0.58       8.5 +/-    0.58  0.040 / 0.040
G26     103.9          54.6                8.0 +/-    0.44       9.5 +/-    0.44  0.040 / 0.050
G31     44.9           33.6                5.7 +/-    0.65       9.2 +/-    0.65  0.100 / 0.170
G32     96.8           10.7                6.6 +/-    2.20      18.1 +/-    2.20  0.090 / 0.210