PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/02-15:12:30
G02     261.2          77.8                7.8 +/-    0.48       8.0 +/-    0.48  0.050 / 0.090
G05     170.3          20.9               10.3 +/-    1.21      22.3 +/-    1.21  0.060 / 0.090
G06     39.7           50.8                7.5 +/-    0.67       9.4 +/-    0.67  0.040 / 0.040
G12     320.7          58.8                7.7 +/-    0.87       8.8 +/-    0.87  0.040 / 0.040
G17     74.5           20.6                8.5 +/-    1.44      18.5 +/-    1.44  0.320 / 0.370
G19     64.3           32.8                7.4 +/-    2.21      12.3 +/-    2.21  0.220 / 0.370
G24     239.8          30.8                8.1 +/-    1.79      13.9 +/-    1.79  0.120 / 0.160
G25     317.1          16.9                5.4 +/-    3.37      12.9 +/-    3.37  0.110 / 0.270