PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-19:27:50
G10     247.3          24.2               11.1 +/-    1.28      22.0 +/-    1.28  0.040 / 0.050
G13     57.1           31.6                9.8 +/-    1.65      16.6 +/-    1.65  0.040 / 0.050
G15     103.5          59.5               10.6 +/-    1.34      12.1 +/-    1.34  0.120 / 0.350
G16     299.1          15.6                6.5 +/-    2.48      15.8 +/-    2.48  0.130 / 0.380
G20     264.7          48.2               10.5 +/-    2.84      13.6 +/-    2.84  0.080 / 0.120
G21     329.7          57.7               10.4 +/-    0.27      12.1 +/-    0.27  0.080 / 0.120
G26     271.6          17.0                9.9 +/-    1.46      23.6 +/-    1.46  0.030 / 0.030
G29     163.5          54.8               12.4 +/-    0.47      14.8 +/-    0.47  0.030 / 0.040