PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/20-12:43:00
G08     270.7          17.4                5.4 +/-    1.41      12.7 +/-    1.41  0.050 / 0.050
G10     62.3           58.3                3.2 +/-    0.92       3.6 +/-    0.92  0.040 / 0.040
G11     312.7          15.6                0.7 +/-    2.20       1.7 +/-    2.20  0.140 / 0.270
G14     265.4          64.4                5.8 +/-    0.69       6.4 +/-    0.69  0.160 / 0.310
G21     154.4          13.5                3.5 +/-    2.85       9.1 +/-    2.85  0.050 / 0.080
G24     39.5           9.7                 1.9 +/-    1.24       5.3 +/-    1.24  0.050 / 0.080
G27     230.5          15.0                6.5 +/-    1.56      16.1 +/-    1.56  0.110 / 0.250
G31     177.1          32.4                5.9 +/-    1.59       9.8 +/-    1.59  0.110 / 0.240
G32     346.3          73.3                4.4 +/-    0.27       4.6 +/-    0.27  0.110 / 0.350