PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-17:57:40
G10     269.4          38.9               14.1 +/-    1.26      20.9 +/-    1.26  0.070 / 0.160
G13     41.4           17.7                9.2 +/-    0.92      21.5 +/-    0.92  0.070 / 0.120
G15     56.1           45.9               10.0 +/-    0.66      13.3 +/-    0.66  0.040 / 0.050
G16     282.5          10.3               11.0 +/-    2.13      30.5 +/-    2.13  0.040 / 0.050
G18     309.2          65.9               10.7 +/-    0.59      11.7 +/-    0.59  0.110 / 0.180
G20     55.4           34.5                8.7 +/-    1.20      13.9 +/-    1.20  0.110 / 0.200
G21     23.9           74.3               11.8 +/-    0.95      12.2 +/-    0.95  0.070 / 0.120
G24     119.5          15.3               15.2 +/-    2.30      37.5 +/-    2.30  0.050 / 0.100
G27     316.7          21.9                7.4 +/-    2.12      15.5 +/-    2.12  0.100 / 0.210
G29     165.8          23.5               15.6 +/-    2.64      31.5 +/-    2.64  0.100 / 0.290