PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/30-15:27:30
G05     45.5           28.2                5.7 +/-    1.00      10.3 +/-    1.00  0.060 / 0.090
G13     85.7           34.8                8.8 +/-    0.49      14.0 +/-    0.49  0.040 / 0.080
G15     133.2          46.7               10.4 +/-    1.14      13.7 +/-    1.14  0.050 / 0.100
G20     241.6          32.4               10.0 +/-    2.07      16.7 +/-    2.07  0.050 / 0.090
G21     305.6          41.1                7.9 +/-    0.96      11.4 +/-    0.96  0.110 / 0.380
G25     204.2          18.7                7.8 +/-    2.61      17.8 +/-    2.61  0.150 / 0.460
G26     296.5          19.9                6.9 +/-    1.44      15.2 +/-    1.44  0.030 / 0.020
G29     134.4          83.4                8.7 +/-    0.81       8.8 +/-    0.81  0.030 / 0.030