PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/20-04:43:00
G03     231.1          65.7                4.7 +/-    1.37       5.1 +/-    1.37  0.040 / 0.060
G07     250.8          10.5               -4.6 +/-   16.28     -12.6 +/-   16.28  0.050 / 0.060
G09     307.8          26.6                1.4 +/-    1.80       2.6 +/-    1.80  0.160 / 0.340
G14     103.0          12.1                3.5 +/-    1.79       9.2 +/-    1.79  0.090 / 0.380
G16     113.8          61.7                5.3 +/-    1.12       5.9 +/-    1.12  0.150 / 0.530
G22     193.8          51.3                5.2 +/-    1.74       6.5 +/-    1.74  0.140 / 0.490
G23     321.9          51.8                4.2 +/-    1.04       5.2 +/-    1.04  0.040 / 0.060
G26     62.1           48.5                3.6 +/-    0.48       4.6 +/-    0.48  0.040 / 0.050
G31     54.8           15.8                1.9 +/-    1.51       4.6 +/-    1.51  0.050 / 0.070