PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-23:57:30
G02     248.6          77.9                7.8 +/-    0.67       8.0 +/-    0.67  0.090 / 0.260
G05     170.3          18.0               15.9 +/-    2.51      36.7 +/-    2.51  0.100 / 0.300
G06     39.5           59.9                9.3 +/-    0.30      10.6 +/-    0.30  0.140 / 0.110
G12     320.8          50.5                8.1 +/-    0.84      10.1 +/-    0.84  0.130 / 0.140
G17     72.1           20.8                9.4 +/-    1.11      20.3 +/-    1.11  0.050 / 0.060
G19     58.4           37.3                9.5 +/-    0.49      14.5 +/-    0.49  0.040 / 0.060
G24     242.3          33.7               12.9 +/-    0.81      21.0 +/-    0.81  0.090 / 0.090
G25     316.6          14.1                7.8 +/-    3.14      19.9 +/-    3.14  0.070 / 0.080