PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-18:57:50
G02     56.5           35.7                8.4 +/-    0.56      13.1 +/-    0.56  0.040 / 0.090
G05     61.4           63.4               10.0 +/-    0.47      11.0 +/-    0.47  0.040 / 0.100
G12     184.7          35.2               11.9 +/-    1.18      18.7 +/-    1.18  0.040 / 0.070
G13     128.1          13.7               10.5 +/-    2.42      26.9 +/-    2.42  0.060 / 0.060
G15     165.0          10.9                5.0 +/-   30.16      13.8 +/-   30.16  0.050 / 0.100
G21     269.9          15.3               11.4 +/-    1.18      28.1 +/-    1.18  0.050 / 0.100
G25     241.0          53.4                9.8 +/-    1.47      11.9 +/-    1.47  0.110 / 0.320
G29     327.5          52.7                8.2 +/-    1.25      10.0 +/-    1.25  0.110 / 0.420