PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-18:57:40
G08     287.9          22.9                7.7 +/-    1.50      15.8 +/-    1.50  0.080 / 0.110
G10     17.2           63.2                9.5 +/-    0.64      10.5 +/-    0.64  0.100 / 0.130
G14     235.2          51.3               10.5 +/-    1.74      13.1 +/-    1.74  0.110 / 0.200
G18     71.3           47.1                8.9 +/-    0.71      11.7 +/-    0.71  0.080 / 0.220
G21     147.5          30.1                9.6 +/-    1.45      16.7 +/-    1.45  0.030 / 0.020
G24     52.6           24.1                7.3 +/-    2.48      14.5 +/-    2.48  0.030 / 0.020
G27     247.7          28.6               10.8 +/-    1.96      19.5 +/-    1.96  0.060 / 0.110
G32     256.9          70.4                8.7 +/-    0.50       9.1 +/-    0.50  0.080 / 0.110