PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-18:13:00
G10     268.7          38.5               10.7 +/-    1.23      15.9 +/-    1.23  0.190 / 0.270
G13     41.7           18.2                9.3 +/-    3.22      21.4 +/-    3.22  0.110 / 0.130
G15     56.7           46.4               10.2 +/-    0.69      13.5 +/-    0.69  0.040 / 0.030
G18     307.5          65.7               10.5 +/-    0.72      11.4 +/-    0.72  0.040 / 0.030
G20     55.0           34.8                8.9 +/-    1.55      14.1 +/-    1.55  0.090 / 0.100
G21     21.0           74.0               10.7 +/-    1.01      11.1 +/-    1.01  0.070 / 0.100
G24     120.0          15.0               14.0 +/-    2.19      34.9 +/-    2.19  0.130 / 0.220
G27     317.0          21.5               10.2 +/-    2.64      21.7 +/-    2.64  0.110 / 0.210
G29     165.7          23.9               13.6 +/-    1.00      27.2 +/-    1.00  0.100 / 0.240