PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-11:42:50
G07     40.3           69.7                5.6 +/-    0.63       6.0 +/-    0.63  0.040 / 0.040
G08     52.8           41.2                3.8 +/-    0.95       5.5 +/-    0.95  0.030 / 0.040
G09     176.7          38.3                7.2 +/-    0.99      10.7 +/-    0.99  0.030 / 0.030
G11     121.3          33.1                5.8 +/-    0.96       9.5 +/-    0.96  0.030 / 0.030
G17     199.1          11.8               -2.5 +/-   15.30      -6.7 +/-   15.30  0.190 / 0.210
G18     107.0          14.6                5.0 +/-    2.04      12.7 +/-    2.04  0.110 / 0.240
G23     160.7          11.5                3.9 +/-    1.21      10.4 +/-    1.21  0.230 / 0.390
G27     37.9           10.7                3.9 +/-    2.52      10.6 +/-    2.52  0.250 / 0.450
G28     269.8          50.5                6.2 +/-    2.41       7.8 +/-    2.41  0.170 / 0.330
G30     326.8          56.0                5.0 +/-    0.51       5.9 +/-    0.51  0.180 / 0.310