PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-12:12:30
G10     249.6          25.3                4.1 +/-    1.15       7.9 +/-    1.15  0.090 / 0.390
G13     55.3           31.4                5.2 +/-    1.17       8.8 +/-    1.17  0.090 / 0.400
G15     86.0           56.7                5.7 +/-    0.31       6.6 +/-    0.31  0.090 / 0.110
G16     299.0          14.6                1.9 +/-    1.84       4.7 +/-    1.84  0.070 / 0.110
G20     37.8           54.2                4.4 +/-    0.48       5.3 +/-    0.48  0.030 / 0.060
G21     336.7          61.6                5.0 +/-    0.67       5.6 +/-    0.67  0.030 / 0.040
G26     269.7          16.0                5.7 +/-    1.56      13.8 +/-    1.56  0.040 / 0.050
G29     163.3          48.9                8.0 +/-    1.23      10.2 +/-    1.23  0.050 / 0.060