PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-03:27:50
G01     225.8          18.3                5.6 +/-    1.95      12.9 +/-    1.95  0.030 / 0.030
G03     293.7          66.1                4.3 +/-    1.55       4.7 +/-    1.55  0.030 / 0.040
G14     83.3           27.4                3.8 +/-    1.62       7.0 +/-    1.62  0.160 / 0.420
G16     146.1          43.2                9.1 +/-    0.64      12.6 +/-    0.64  0.160 / 0.380
G22     227.5          72.0                6.7 +/-    0.63       7.1 +/-    0.63  0.090 / 0.180
G23     307.0          37.8                4.8 +/-    1.12       7.2 +/-    1.12  0.090 / 0.180
G26     100.3          53.6                7.0 +/-    1.24       8.4 +/-    1.24  0.050 / 0.090
G31     45.2           32.3                3.5 +/-    0.63       5.8 +/-    0.63  0.050 / 0.120