PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-11:27:50
G01     260.9          39.8                7.1 +/-    2.80      10.3 +/-    2.80  0.050 / 0.040
G03     317.1          40.3                4.3 +/-    0.88       6.2 +/-    0.88  0.060 / 0.040
G10     133.1          10.3                6.6 +/-    1.47      18.3 +/-    1.47  0.060 / 0.110
G11     243.7          16.1                4.8 +/-    1.29      11.6 +/-    1.29  0.060 / 0.070
G14     51.2           45.6                5.5 +/-    1.11       7.3 +/-    1.11  0.210 / 0.270
G18     225.4          33.6                8.0 +/-    1.17      13.0 +/-    1.17  0.200 / 0.340
G22     311.4          62.4                3.8 +/-    0.85       4.2 +/-    0.85  0.210 / 0.340
G25     46.4           13.8                3.4 +/-    3.87       8.8 +/-    3.87  0.210 / 0.340
G31     46.5           67.9                4.4 +/-    0.47       4.7 +/-    0.47  0.070 / 0.070
G32     67.1           32.2                4.8 +/-    1.26       8.1 +/-    1.26  0.060 / 0.070