PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/03-01:58:10
G02     52.4           38.1                7.7 +/-    0.40      11.5 +/-    0.40  0.070 / 0.080
G05     74.3           66.6                9.6 +/-    0.21      10.3 +/-    0.21  0.050 / 0.090
G12     188.6          45.1               11.7 +/-    1.96      15.7 +/-    1.96  0.050 / 0.060
G21     264.6          12.5               11.0 +/-    2.29      29.0 +/-    2.29  0.040 / 0.050
G25     251.9          57.2               10.1 +/-    1.26      11.7 +/-    1.26  0.210 / 0.490
G29     325.2          49.4               10.5 +/-    1.07      13.3 +/-    1.07  0.220 / 0.530