PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/25-07:57:40
G10     261.6          35.7               10.1 +/-    1.15      15.8 +/-    1.15  0.030 / 0.040
G13     44.5           21.6                5.1 +/-    1.85      10.8 +/-    1.85  0.040 / 0.040
G15     64.6           51.5                5.2 +/-    1.51       6.5 +/-    1.51  0.060 / 0.110
G16     289.5          12.8                5.6 +/-    1.05      14.7 +/-    1.05  0.080 / 0.080
G20     288.4          57.9                7.2 +/-    1.69       8.3 +/-    1.69  0.210 / 0.290
G21     359.4          69.8                5.3 +/-    0.68       5.6 +/-    0.68  0.220 / 0.350
G24     123.4          11.3                4.5 +/-    2.39      12.3 +/-    2.39  0.160 / 0.220
G27     321.4          12.9                0.8 +/-   13.25       2.1 +/-   13.25  0.100 / 0.180
G29     163.8          31.3                5.1 +/-    1.61       8.7 +/-    1.61  0.090 / 0.210