PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-14:57:40
G02     53.9           37.0                6.4 +/-    1.70       9.8 +/-    1.70  0.030 / 0.030
G05     75.6           68.9                6.5 +/-    0.32       6.9 +/-    0.32  0.030 / 0.030
G12     183.8          38.6                8.3 +/-    1.05      12.3 +/-    1.05  0.040 / 0.070
G13     131.7          10.5                3.2 +/-   23.17       8.7 +/-   23.17  0.050 / 0.060
G21     266.2          12.6                7.0 +/-    4.20      18.4 +/-    4.20  0.240 / 0.400
G25     249.0          55.9                7.4 +/-    2.24       8.8 +/-    2.24  0.220 / 0.310
G29     323.7          47.5                6.2 +/-    0.70       8.1 +/-    0.70  0.200 / 0.420