PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/20-02:43:10
G08     278.5          22.3               10.1 +/-    0.68      21.0 +/-    0.68  0.270 / 0.220
G10     32.9           62.7                6.6 +/-    0.42       7.4 +/-    0.42  0.150 / 0.170
G14     245.0          58.9                9.9 +/-    1.00      11.4 +/-    1.00  0.030 / 0.020
G18     77.5           45.2                6.8 +/-    0.75       9.1 +/-    0.75  0.020 / 0.020
G21     151.0          27.5               10.8 +/-    1.94      19.9 +/-    1.94  0.090 / 0.150
G24     47.3           20.2                7.9 +/-    3.21      17.4 +/-    3.21  0.080 / 0.130
G27     240.7          24.0               11.1 +/-    2.30      22.2 +/-    2.30  0.090 / 0.160
G31     181.4          16.9               12.8 +/-    1.75      30.4 +/-    1.75  0.120 / 0.140
G32     279.0          74.1                8.9 +/-    0.39       9.2 +/-    0.39  0.040 / 0.060