PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-00:12:50
G02     228.1          70.9                9.4 +/-    0.42       9.9 +/-    0.42  0.050 / 0.110
G05     173.5          11.2                2.5 +/-   27.48       6.8 +/-   27.48  0.050 / 0.090
G06     43.7           68.5                7.7 +/-    0.58       8.2 +/-    0.58  0.330 / 0.550
G12     320.0          42.6                8.4 +/-    0.40      11.7 +/-    0.40  0.250 / 0.500
G17     65.7           25.4                8.9 +/-    1.90      17.3 +/-    1.90  0.040 / 0.060
G19     50.1           42.5                9.3 +/-    1.66      13.0 +/-    1.66  0.050 / 0.050
G24     251.0          38.0               11.3 +/-    2.06      17.0 +/-    2.06  0.040 / 0.060
G28     127.7          9.9                12.3 +/-    2.25      34.3 +/-    2.25  0.040 / 0.070