PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-01:42:50
G02     61.2           30.8                9.7 +/-    0.32      16.7 +/-    0.32  0.050 / 0.060
G05     54.9           58.4               11.9 +/-    0.66      13.7 +/-    0.66  0.050 / 0.070
G12     185.8          33.1               13.2 +/-    1.17      21.8 +/-    1.17  0.130 / 0.260
G13     125.7          16.1               14.6 +/-    1.71      35.2 +/-    1.71  0.080 / 0.240
G15     161.8          14.3               14.2 +/-    3.05      35.9 +/-    3.05  0.090 / 0.240
G21     273.3          19.0                9.6 +/-    1.10      21.5 +/-    1.10  0.090 / 0.250
G25     233.6          50.8               12.3 +/-    1.36      15.4 +/-    1.36  0.040 / 0.080
G29     333.2          59.3               12.5 +/-    0.77      14.3 +/-    0.77  0.110 / 0.090