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                5.3 +/-    0.39       5.6 +/-    0.39  0.030 / 0.040
G08     52.6           41.0                3.5 +/-    0.89       5.1 +/-    0.89  0.030 / 0.040
G09     175.0          36.1                7.8 +/-    1.34      12.2 +/-    1.34  0.030 / 0.060
G11     121.0          33.3                8.1 +/-    0.52      13.2 +/-    0.52  0.040 / 0.050
G17     199.0          12.3                5.6 +/-    2.45      14.9 +/-    2.45  0.100 / 0.210
G18     106.1          14.7                7.1 +/-    2.31      17.8 +/-    2.31  0.200 / 0.320
G23     160.9          11.9                4.4 +/-    1.26      11.7 +/-    1.26  0.090 / 0.340
G27     38.0           11.2                2.1 +/-    1.06       5.8 +/-    1.06  0.130 / 0.290
G28     269.4          50.1                7.3 +/-    0.74       9.1 +/-    0.74  0.130 / 0.270
G30     326.8          56.1                4.1 +/-    1.22       4.8 +/-    1.22  0.130 / 0.260