PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-15:58:00
G10     259.4          32.7                6.5 +/-    1.61      10.8 +/-    1.61  0.140 / 0.330
G13     46.6           24.8                4.9 +/-    2.36       9.7 +/-    2.36  0.100 / 0.190
G15     67.2           52.4                6.0 +/-    0.73       7.4 +/-    0.73  0.140 / 0.220
G16     290.5          12.9                5.7 +/-    1.72      14.9 +/-    1.72  0.140 / 0.270
G18     288.7          62.8                5.6 +/-    1.06       6.3 +/-    1.06  0.060 / 0.060
G20     47.8           42.9                4.3 +/-    1.10       6.0 +/-    1.10  0.060 / 0.060
G21     0.8            69.9                5.3 +/-    0.61       5.6 +/-    0.61  0.110 / 0.260
G26     261.5          11.3                7.8 +/-    1.24      21.2 +/-    1.24  0.130 / 0.330
G27     320.8          14.2                3.6 +/-    2.14       9.2 +/-    2.14  0.050 / 0.030
G29     165.0          34.8                8.3 +/-    0.90      13.2 +/-    0.90  0.050 / 0.030