PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-16:57:50
G08     269.0          18.1                7.5 +/-    1.49      17.4 +/-    1.49  0.150 / 0.180
G10     59.7           59.0                6.3 +/-    0.45       7.2 +/-    0.45  0.110 / 0.160
G11     312.9          15.6                6.0 +/-    1.72      14.6 +/-    1.72  0.100 / 0.380
G14     265.4          65.4                7.7 +/-    0.76       8.4 +/-    0.76  0.110 / 0.330
G18     92.7           34.6                6.6 +/-    0.65      10.6 +/-    0.65  0.140 / 0.260
G21     153.4          12.3                8.7 +/-    2.18      23.1 +/-    2.18  0.150 / 0.340
G24     40.2           11.2                6.0 +/-    2.10      16.4 +/-    2.10  0.050 / 0.110
G27     231.1          15.8                8.3 +/-    1.86      20.4 +/-    1.86  0.080 / 0.130
G31     178.8          29.6               11.5 +/-    1.29      20.3 +/-    1.29  0.030 / 0.030
G32     337.3          74.3                7.2 +/-    0.76       7.4 +/-    0.76  0.020 / 0.030