PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-04:12:50
G01     315.6          25.6                6.1 +/-    1.41      11.8 +/-    1.41  0.140 / 0.180
G10     91.7           47.0                5.9 +/-    0.89       7.7 +/-    0.89  0.090 / 0.150
G11     295.7          25.6                5.8 +/-    1.09      11.3 +/-    1.09  0.120 / 0.350
G14     319.9          71.1                5.1 +/-    0.93       5.3 +/-    0.93  0.130 / 0.290
G18     295.4          46.3                7.9 +/-    5.42      10.5 +/-    5.42  0.050 / 0.040
G20     111.9          23.7                5.8 +/-    1.66      11.8 +/-    1.66  0.040 / 0.040
G22     304.9          16.0                6.9 +/-    2.77      16.6 +/-    2.77  0.050 / 0.050
G25     95.3           11.5                3.5 +/-   11.61       9.5 +/-   11.61  0.050 / 0.040
G31     171.8          51.8                7.2 +/-    0.82       8.9 +/-    0.82  0.050 / 0.070
G32     18.3           62.8                4.7 +/-    0.58       5.2 +/-    0.58  0.060 / 0.080