PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-05:27:50
G03     217.6          59.8                6.5 +/-    2.08       7.4 +/-    2.08  0.050 / 0.060
G07     256.3          15.1                7.5 +/-    2.97      18.5 +/-    2.97  0.060 / 0.060
G09     311.6          32.0                5.1 +/-    1.93       8.6 +/-    1.93  0.030 / 0.040
G16     95.1           63.6                7.4 +/-    0.54       8.2 +/-    0.54  0.040 / 0.040
G22     190.1          43.6                6.6 +/-    0.94       9.0 +/-    0.94  0.040 / 0.040
G23     328.1          58.1                6.0 +/-    1.06       6.9 +/-    1.06  0.040 / 0.040
G26     54.2           43.3                7.4 +/-    1.27      10.2 +/-    1.27  0.070 / 0.220
G31     58.9           10.5                3.1 +/-    2.26       8.5 +/-    2.26  0.090 / 0.210