PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-02:12:40
G02     55.9           35.1               10.0 +/-    1.01      15.8 +/-    1.01  0.150 / 0.360
G05     64.7           63.8               10.2 +/-    0.62      11.2 +/-    0.62  0.140 / 0.420
G12     187.4          40.3               10.3 +/-    1.56      15.0 +/-    1.56  0.040 / 0.070
G13     130.9          11.7                9.3 +/-   14.16      24.9 +/-   14.16  0.050 / 0.060
G21     268.1          15.3               11.7 +/-    0.90      29.0 +/-    0.90  0.050 / 0.080
G25     243.6          55.1               11.7 +/-    1.16      13.9 +/-    1.16  0.050 / 0.090
G29     328.5          53.5               10.6 +/-    0.53      12.9 +/-    0.53  0.040 / 0.040