PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-01:43:10
G02     55.8           35.3                9.1 +/-    1.69      14.4 +/-    1.69  0.040 / 0.060
G05     65.0           63.9                9.6 +/-    0.54      10.6 +/-    0.54  0.050 / 0.060
G12     187.4          40.4               12.6 +/-    1.22      18.2 +/-    1.22  0.140 / 0.500
G13     131.0          11.6               12.7 +/-    4.51      34.1 +/-    4.51  0.170 / 0.330
G21     267.9          15.0               10.4 +/-    2.82      25.9 +/-    2.82  0.050 / 0.080
G25     244.2          55.2               10.1 +/-    0.75      12.0 +/-    0.75  0.040 / 0.070
G29     328.1          53.0               11.1 +/-    1.59      13.5 +/-    1.59  0.270 / 0.380