PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-11:12:30
G07     38.6           69.6                3.9 +/-    0.67       4.1 +/-    0.67  0.030 / 0.040
G08     53.2           41.4                2.6 +/-    0.79       3.7 +/-    0.79  0.040 / 0.040
G09     176.6          38.8                5.9 +/-    0.95       8.8 +/-    0.95  0.040 / 0.030
G11     121.7          32.7                3.2 +/-    1.05       5.2 +/-    1.05  0.030 / 0.030
G17     199.0          11.5               -5.0 +/-   14.07     -13.5 +/-   14.07  0.200 / 0.290
G18     107.4          14.3                2.8 +/-    2.78       7.1 +/-    2.78  0.270 / 0.340
G23     160.8          12.4                2.7 +/-    1.10       7.1 +/-    1.10  0.190 / 0.280
G27     38.1           11.2                2.6 +/-    3.28       7.1 +/-    3.28  0.250 / 0.260
G28     268.9          50.1                4.8 +/-    3.60       6.1 +/-    3.60  0.170 / 0.300
G30     326.0          55.3                3.3 +/-    0.52       4.0 +/-    0.52  0.160 / 0.320