PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-19:12:40
G08     280.8          22.0                8.3 +/-    1.08      17.4 +/-    1.08  0.110 / 0.150
G10     32.5           62.6                6.9 +/-    0.73       7.7 +/-    0.73  0.200 / 0.120
G14     243.5          57.0                9.0 +/-    1.85      10.6 +/-    1.85  0.150 / 0.170
G18     79.1           43.2                9.8 +/-    0.80      13.6 +/-    0.80  0.190 / 0.240
G21     150.0          23.4               10.8 +/-    2.04      21.9 +/-    2.04  0.080 / 0.150
G24     47.4           20.2                8.3 +/-    2.76      18.1 +/-    2.76  0.130 / 0.170
G27     241.3          24.4               11.2 +/-    1.13      22.2 +/-    1.13  0.030 / 0.020
G31     182.5          15.4                9.7 +/-    1.98      23.9 +/-    1.98  0.030 / 0.010
G32     278.6          74.3                7.6 +/-    0.58       7.8 +/-    0.58  0.090 / 0.170