PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/18-10:42:30
G08     271.4          17.6                4.5 +/-    2.08      10.5 +/-    2.08  0.050 / 0.060
G10     61.3           58.5                4.1 +/-    0.44       4.8 +/-    0.44  0.040 / 0.060
G11     312.6          15.8                4.1 +/-    3.22       9.9 +/-    3.22  0.090 / 0.150
G14     262.9          63.0                5.3 +/-    0.35       5.9 +/-    0.35  0.100 / 0.170
G18     312.6          31.0                6.1 +/-    1.74      10.5 +/-    1.74  0.190 / 0.520
G21     154.6          14.9                4.0 +/-    2.49       9.9 +/-    2.49  0.170 / 0.400
G27     231.1          15.5                4.9 +/-    1.69      12.0 +/-    1.69  0.030 / 0.040
G31     176.9          32.2                4.3 +/-    1.35       7.2 +/-    1.35  0.030 / 0.040
G32     345.7          73.6                5.8 +/-    0.48       6.0 +/-    0.48  0.150 / 0.360