PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-10:43:00
G01     314.5          26.8                4.3 +/-    1.00       8.0 +/-    1.00  0.180 / 0.150
G10     94.5           45.9                6.3 +/-    1.22       8.4 +/-    1.22  0.120 / 0.130
G11     292.1          27.0                4.5 +/-    1.14       8.5 +/-    1.14  0.050 / 0.050
G14     332.1          70.8                3.8 +/-    0.99       4.0 +/-    0.99  0.050 / 0.040
G18     290.7          48.4                6.3 +/-    4.47       8.1 +/-    4.47  0.030 / 0.030
G20     113.7          21.4                4.9 +/-    1.72      10.3 +/-    1.72  0.040 / 0.020
G22     307.2          22.8                4.4 +/-    2.08       9.0 +/-    2.08  0.060 / 0.050
G25     91.3           12.5                4.3 +/-    1.92      11.2 +/-    1.92  0.050 / 0.040
G31     173.8          52.6                8.3 +/-    1.12      10.2 +/-    1.12  0.140 / 0.150
G32     13.7           64.0                5.1 +/-    0.62       5.6 +/-    0.62  0.090 / 0.120