PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-10:27:50
G01     303.8          36.1               21.8 +/-    2.03      33.9 +/-    2.03  0.040 / 0.060
G10     109.5          36.3                7.0 +/-    1.24      10.9 +/-    1.24  0.040 / 0.060
G11     276.9          27.8                4.5 +/-    1.04       8.2 +/-    1.04  0.080 / 0.080
G14     5.7            65.1                4.8 +/-    0.79       5.2 +/-    0.79  0.070 / 0.080
G18     268.5          50.9                7.7 +/-    7.58       9.6 +/-    7.58  0.060 / 0.080
G20     122.7          11.3                5.5 +/-    1.63      14.8 +/-    1.63  0.080 / 0.090
G22     312.1          32.7                4.2 +/-    1.15       7.0 +/-    1.15  0.040 / 0.050
G25     78.3           16.9                3.1 +/-    1.33       7.4 +/-    1.33  0.050 / 0.050
G31     163.5          68.1                7.8 +/-    0.39       8.3 +/-    0.39  0.070 / 0.150
G32     34.5           53.9                4.6 +/-    1.68       5.6 +/-    1.68  0.070 / 0.180