PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-00:57:40
G02     14.4           68.8                9.1 +/-    0.91       9.7 +/-    0.91  0.240 / 0.390
G05     156.6          46.0               13.3 +/-    0.40      17.7 +/-    0.40  0.190 / 0.370
G06     44.3           32.3                7.2 +/-    1.11      12.0 +/-    1.11  0.030 / 0.030
G12     280.7          77.9               10.8 +/-    0.72      11.0 +/-    0.72  0.030 / 0.030
G19     85.3           19.7               10.3 +/-    1.17      22.7 +/-    1.17  0.040 / 0.050
G24     218.9          14.2               13.6 +/-    3.12      34.4 +/-    3.12  0.060 / 0.060
G25     313.1          40.1                9.1 +/-    1.36      13.2 +/-    1.36  0.070 / 0.130
G29     296.2          19.4               10.0 +/-    1.56      22.3 +/-    1.56  0.080 / 0.110