PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-21:43:10
G10     257.2          32.0               12.8 +/-    1.52      21.5 +/-    1.52  0.150 / 0.490
G13     47.5           25.1               10.1 +/-    2.64      19.6 +/-    2.64  0.130 / 0.440
G15     78.1           58.0                8.8 +/-    0.83      10.2 +/-    0.83  0.060 / 0.050
G16     286.5          15.1                7.9 +/-    1.60      19.5 +/-    1.60  0.050 / 0.060
G20     257.4          17.1               12.6 +/-    2.90      29.8 +/-    2.90  0.030 / 0.040
G21     341.7          64.6                9.6 +/-    0.29      10.6 +/-    0.29  0.030 / 0.040
G26     259.4          12.5               11.7 +/-    1.83      30.9 +/-    1.83  0.230 / 0.190
G29     166.9          43.0               11.8 +/-    0.74      16.3 +/-    0.74  0.120 / 0.160