PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-04:58:00
G10     253.9          29.2               10.3 +/-    1.17      18.3 +/-    1.17  0.190 / 0.460
G13     50.4           27.8                5.5 +/-    0.70      10.1 +/-    0.70  0.250 / 0.570
G15     78.8           56.4                7.3 +/-    0.42       8.5 +/-    0.42  0.040 / 0.060
G16     291.1          15.3                4.2 +/-    2.40      10.3 +/-    2.40  0.050 / 0.050
G20     307.5          68.6                5.3 +/-    0.99       5.6 +/-    0.99  0.100 / 0.120
G21     338.1          62.6                5.3 +/-    0.67       5.9 +/-    0.67  0.100 / 0.120
G26     262.9          14.0                8.7 +/-    1.64      22.1 +/-    1.64  0.060 / 0.170
G29     166.1          46.2               10.9 +/-    0.80      14.4 +/-    0.80  0.080 / 0.160