PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-22:43:00
G02     246.1          77.2               11.1 +/-    0.62      11.3 +/-    0.62  0.160 / 0.290
G05     170.5          17.5               17.3 +/-    1.32      40.5 +/-    1.32  0.090 / 0.260
G06     39.8           59.6               11.8 +/-    0.59      13.4 +/-    0.59  0.040 / 0.040
G12     320.8          50.1               10.9 +/-    1.01      13.8 +/-    1.01  0.040 / 0.040
G17     71.3           21.7                9.2 +/-    1.00      19.5 +/-    1.00  0.060 / 0.090
G19     58.0           37.5               10.1 +/-    0.61      15.3 +/-    0.61  0.060 / 0.080
G24     243.4          34.1               12.9 +/-    1.36      20.8 +/-    1.36  0.040 / 0.070
G25     316.5          13.2               10.0 +/-    4.08      25.9 +/-    4.08  0.040 / 0.060