PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/25-03:57:40
G02     246.1          77.5                2.8 +/-    0.46       2.8 +/-    0.46  0.140 / 0.110
G05     171.0          17.0                3.7 +/-    1.03       8.8 +/-    1.03  0.110 / 0.090
G06     39.1           63.7                1.5 +/-    0.51       1.7 +/-    0.51  0.040 / 0.070
G12     320.9          50.2                1.8 +/-    1.02       2.2 +/-    1.02  0.050 / 0.050
G17     72.3           20.0                2.1 +/-    2.57       4.6 +/-    2.57  0.040 / 0.050
G19     57.0           38.6              -12.6 +/-    1.62     -18.7 +/-    1.62  0.050 / 0.040
G24     241.4          34.0                5.6 +/-    2.70       9.1 +/-    2.70  0.240 / 0.340
G25     316.6          15.4               -0.0 +/-    1.66      -0.0 +/-    1.66  0.300 / 0.320