PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-18:12:50
G10     268.7          38.5               12.1 +/-    1.86      18.1 +/-    1.86  0.090 / 0.160
G13     41.7           18.2                9.7 +/-    1.20      22.3 +/-    1.20  0.090 / 0.170
G15     56.7           46.4               10.4 +/-    0.39      13.8 +/-    0.39  0.120 / 0.210
G16     283.3          10.4                5.0 +/-    2.66      13.8 +/-    2.66  0.110 / 0.210
G18     307.5          65.7               10.3 +/-    0.69      11.2 +/-    0.69  0.060 / 0.120
G20     55.0           34.8                9.1 +/-    1.23      14.5 +/-    1.23  0.070 / 0.120
G21     21.0           74.0               11.4 +/-    0.40      11.8 +/-    0.40  0.040 / 0.050
G24     120.0          15.0               16.6 +/-    1.56      41.2 +/-    1.56  0.040 / 0.060
G27     317.0          21.5                7.6 +/-    4.06      16.2 +/-    4.06  0.080 / 0.240
G29     165.7          23.9               13.1 +/-    3.42      26.2 +/-    3.42  0.110 / 0.260