PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-11:12:50
G07     44.3           69.7                4.7 +/-    0.70       5.0 +/-    0.70  0.030 / 0.040
G08     51.6           40.0                3.6 +/-    0.95       5.2 +/-    0.95  0.040 / 0.040
G09     176.4          36.8                4.4 +/-    1.11       6.8 +/-    1.11  0.030 / 0.030
G11     119.8          33.8                5.2 +/-    0.77       8.4 +/-    0.77  0.030 / 0.030
G17     199.1          13.3                2.2 +/-    3.05       5.6 +/-    3.05  0.090 / 0.270
G18     105.8          15.2                2.8 +/-    2.80       6.8 +/-    2.80  0.080 / 0.270
G23     160.9          10.8                2.7 +/-    1.63       7.5 +/-    1.63  0.140 / 0.360
G27     37.6           9.7                 2.1 +/-    3.86       5.8 +/-    3.86  0.170 / 0.330
G28     271.5          51.2                4.2 +/-    3.14       5.3 +/-    3.14  0.140 / 0.310
G30     327.8          56.8                3.6 +/-    0.46       4.3 +/-    0.46  0.150 / 0.250