PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-13:43:00
G10     264.9          36.4                6.2 +/-    1.68       9.5 +/-    1.68  0.140 / 0.120
G13     43.2           20.6                3.6 +/-    2.34       7.8 +/-    2.34  0.090 / 0.140
G15     59.9           48.6                4.4 +/-    0.77       5.6 +/-    0.77  0.130 / 0.310
G16     283.5          12.0                4.9 +/-    2.11      13.1 +/-    2.11  0.210 / 0.330
G18     301.8          65.3                4.8 +/-    0.55       5.2 +/-    0.55  0.050 / 0.070
G20     50.9           40.0                2.5 +/-    1.26       3.6 +/-    1.26  0.050 / 0.070
G21     9.7            72.3                4.3 +/-    0.41       4.5 +/-    0.41  0.030 / 0.040
G24     122.7          12.9                6.3 +/-    2.82      16.5 +/-    2.82  0.030 / 0.040
G27     318.9          18.5                4.0 +/-    2.30       9.1 +/-    2.30  0.090 / 0.190
G29     166.6          30.4                5.3 +/-    0.76       9.3 +/-    0.76  0.160 / 0.260