PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-18:43:10
G10     261.0          34.8                8.2 +/-    1.28      13.1 +/-    1.28  0.140 / 0.210
G13     44.9           22.3                7.0 +/-    0.67      14.6 +/-    0.67  0.100 / 0.170
G15     70.5           55.8                8.0 +/-    0.38       9.5 +/-    0.38  0.060 / 0.050
G16     284.5          13.9                2.3 +/-    1.07       5.9 +/-    1.07  0.040 / 0.040
G20     287.0          57.5                8.7 +/-    1.01      10.1 +/-    1.01  0.100 / 0.320
G21     352.7          68.5                8.1 +/-    0.66       8.6 +/-    0.66  0.110 / 0.360
G24     122.1          11.2                5.5 +/-   26.89      14.9 +/-   26.89  0.070 / 0.240
G26     258.3          10.6                8.2 +/-    3.10      22.5 +/-    3.10  0.070 / 0.240
G27     321.4          12.9                6.9 +/-    3.79      18.1 +/-    3.79  0.130 / 0.330
G29     166.9          37.5               10.6 +/-    1.69      16.1 +/-    1.69  0.130 / 0.330