PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-07:27:50
G01     235.6          26.8                6.4 +/-    1.73      12.1 +/-    1.73  0.040 / 0.030
G03     309.2          58.4                6.5 +/-    1.34       7.5 +/-    1.34  0.030 / 0.030
G14     73.4           32.9                4.8 +/-    1.06       7.9 +/-    1.06  0.040 / 0.060
G16     155.8          30.9                5.0 +/-    0.73       8.6 +/-    0.73  0.040 / 0.050
G18     210.4          16.1                4.7 +/-    2.62      11.4 +/-    2.62  0.140 / 0.130
G22     266.4          75.2                5.7 +/-    0.63       5.9 +/-    0.63  0.080 / 0.170
G23     299.2          31.7                6.3 +/-    1.39      10.6 +/-    1.39  0.080 / 0.120
G26     120.8          48.4                6.4 +/-    0.57       8.3 +/-    0.57  0.080 / 0.120
G31     42.0           43.2                3.8 +/-    1.05       5.3 +/-    1.05  0.160 / 0.210
G32     87.8           15.7                4.6 +/-    1.04      11.3 +/-    1.04  0.090 / 0.440