PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-19:57:50
G02     83.4           15.6                8.1 +/-    3.22      19.8 +/-    3.22  0.060 / 0.070
G05     44.8           32.4                6.1 +/-    8.17      10.1 +/-    8.17  0.060 / 0.080
G13     97.1           33.5               10.2 +/-    2.16      16.6 +/-    2.16  0.060 / 0.110
G15     148.7          37.3                9.7 +/-    9.57      14.8 +/-    9.57  0.060 / 0.120
G20     231.4          -13.9              18.0 +/-    5.17      45.9 +/-    5.17  0.080 / 0.140
G21     297.1          35.3                8.8 +/-    7.85      13.9 +/-    7.85  0.090 / 0.110
G25     207.2          24.4                8.0 +/-    3.09      15.9 +/-    3.09  0.090 / 0.240
G26     302.9          19.6               11.2 +/-    2.14      24.9 +/-    2.14  0.080 / 0.170
G29     8.8            85.8                4.9 +/-    7.50       4.9 +/-    7.50  0.040 / 0.070