PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-12:57:30
G01     236.9          27.4                5.2 +/-    2.62       9.7 +/-    2.62  0.070 / 0.140
G14     73.5           32.3                5.7 +/-    1.30       9.6 +/-    1.30  0.060 / 0.150
G16     159.4          28.3                5.8 +/-    1.80      10.6 +/-    1.80  0.080 / 0.140
G18     209.9          16.2                4.7 +/-    0.81      11.4 +/-    0.81  0.080 / 0.120
G22     250.9          77.5                5.3 +/-    0.64       5.4 +/-    0.64  0.030 / 0.040
G23     296.7          27.9                2.5 +/-    1.36       4.6 +/-    1.36  0.030 / 0.040
G26     125.5          47.6                7.8 +/-    1.27      10.1 +/-    1.27  0.060 / 0.140
G31     41.2           46.0                4.1 +/-    0.55       5.5 +/-    0.55  0.060 / 0.110
G32     86.0           19.0                5.3 +/-    1.14      12.0 +/-    1.14  0.090 / 0.170