PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-09:12:50
G08     272.1          18.3                5.3 +/-    1.33      12.3 +/-    1.33  0.050 / 0.070
G10     58.0           59.1                3.5 +/-    0.80       4.0 +/-    0.80  0.050 / 0.060
G14     258.5          61.1                4.3 +/-    0.61       4.9 +/-    0.61  0.160 / 0.170
G18     313.5          29.6                5.5 +/-    1.68       9.6 +/-    1.68  0.100 / 0.160
G20     103.0          15.2                3.3 +/-    1.17       8.1 +/-    1.17  0.140 / 0.340
G21     154.5          17.0                4.1 +/-    2.65       9.7 +/-    2.65  0.140 / 0.400
G24     40.3           11.0                3.1 +/-    1.31       8.5 +/-    1.31  0.020 / 0.030
G27     232.6          16.8                6.0 +/-    3.10      14.3 +/-    3.10  0.030 / 0.040
G31     177.1          30.5                6.5 +/-    1.18      11.3 +/-    1.18  0.090 / 0.220
G32     340.2          74.5                4.2 +/-    0.72       4.3 +/-    0.72  0.170 / 0.200