PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-02:28:00
G08     312.6          17.4                8.3 +/-    1.14      19.3 +/-    1.14  0.050 / 0.060
G10     324.9          58.8                9.6 +/-    0.77      11.0 +/-    0.77  0.050 / 0.070
G14     216.4          25.1               15.3 +/-    2.79      29.7 +/-    2.79  0.040 / 0.040
G15     46.3           16.0                7.0 +/-    1.86      17.0 +/-    1.86  0.040 / 0.030
G20     345.4          64.1               19.3 +/-    1.08      21.2 +/-    1.08  0.150 / 0.270
G21     129.9          61.7               12.8 +/-    0.40      14.3 +/-    0.40  0.160 / 0.280
G24     77.1           29.6                9.0 +/-    1.24      15.9 +/-    1.24  0.080 / 0.080
G27     280.0          37.7               10.6 +/-    1.42      16.0 +/-    1.42  0.080 / 0.070
G32     220.0          50.5               13.9 +/-    1.19      17.4 +/-    1.19  0.150 / 0.220