PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/30-13:28:10
G02     49.0           40.8                3.3 +/-    0.95       4.7 +/-    0.95  0.050 / 0.040
G05     100.7          71.5                4.7 +/-    0.64       5.0 +/-    0.64  0.040 / 0.030
G12     184.3          45.4                5.5 +/-    2.40       7.4 +/-    2.40  0.040 / 0.070
G25     262.3          58.1                4.6 +/-    1.10       5.3 +/-    1.10  0.040 / 0.060
G29     319.1          41.5                4.8 +/-    1.42       6.8 +/-    1.42  0.040 / 0.050