PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-09:28:00
G07     42.4           69.6                6.3 +/-    1.01       6.7 +/-    1.01  0.040 / 0.030
G08     52.6           41.0                4.3 +/-    1.12       6.2 +/-    1.12  0.030 / 0.040
G09     175.0          36.1                9.1 +/-    0.88      14.1 +/-    0.88  0.220 / 0.210
G11     121.0          33.3                8.6 +/-    1.09      14.1 +/-    1.09  0.170 / 0.200
G17     199.0          12.3                3.1 +/-    6.06       8.3 +/-    6.06  0.200 / 0.260
G18     106.1          14.7                6.3 +/-    1.53      15.8 +/-    1.53  0.210 / 0.440
G23     160.9          11.9                5.3 +/-    1.61      14.1 +/-    1.61  0.020 / 0.020
G27     38.0           11.2                3.0 +/-    2.17       8.3 +/-    2.17  0.030 / 0.030
G28     269.4          50.1                8.6 +/-    2.18      10.8 +/-    2.18  0.150 / 0.310
G30     326.8          56.1                5.3 +/-    0.75       6.3 +/-    0.75  0.200 / 0.290