PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-05:42:40
G10     293.2          51.0                9.8 +/-    2.84      12.2 +/-    2.84  0.090 / 0.110
G15     46.6           30.0                6.0 +/-    1.44      10.4 +/-    1.44  0.070 / 0.090
G20     344.1          65.3                8.6 +/-    0.89       9.3 +/-    0.89  0.040 / 0.040
G21     85.6           75.1                9.2 +/-    0.58       9.5 +/-    0.58  0.040 / 0.030
G24     100.9          25.0                7.8 +/-    1.49      15.3 +/-    1.49  0.080 / 0.110
G27     305.5          31.7                7.4 +/-    1.72      12.5 +/-    1.72  0.140 / 0.090
G32     209.7          24.7               10.7 +/-    1.37      21.0 +/-    1.37  0.110 / 0.150