PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/27-14:28:10
G02     65.9           26.9                5.8 +/-    1.52      10.9 +/-    1.52  0.030 / 0.030
G05     51.4           58.3                8.8 +/-    0.51      10.1 +/-    0.51  0.040 / 0.040
G12     180.8          23.1                8.5 +/-    1.37      17.4 +/-    1.37  0.110 / 0.160
G13     120.2          20.0               11.0 +/-    1.41      24.2 +/-    1.41  0.110 / 0.210
G15     158.1          19.6                8.6 +/-    1.51      19.2 +/-    1.51  0.120 / 0.100
G21     278.0          21.6                6.8 +/-    2.91      14.3 +/-    2.91  0.130 / 0.130
G25     227.3          46.4                7.3 +/-    3.00       9.7 +/-    3.00  0.250 / 0.470
G29     333.2          61.1                7.5 +/-    0.66       8.4 +/-    0.66  0.380 / 0.390