PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-07:13:10
G07     39.9           69.4                7.0 +/-    0.94       7.4 +/-    0.94  0.040 / 0.040
G08     53.4           41.5                4.9 +/-    0.74       7.0 +/-    0.74  0.040 / 0.040
G09     174.4          36.7                7.7 +/-    0.69      11.8 +/-    0.69  0.040 / 0.030
G11     122.0          32.6                6.5 +/-    1.02      10.8 +/-    1.02  0.030 / 0.030
G17     198.6          11.6               -1.9 +/-   18.00      -5.1 +/-   18.00  0.070 / 0.380
G18     106.7          14.1                5.7 +/-    1.45      14.4 +/-    1.45  0.100 / 0.120
G23     161.2          13.9                5.5 +/-    2.28      14.0 +/-    2.28  0.140 / 0.350
G27     38.5           12.7                2.9 +/-    2.16       7.5 +/-    2.16  0.150 / 0.290
G28     267.2          49.0                8.1 +/-    4.11      10.3 +/-    4.11  0.060 / 0.090
G30     325.3          54.9                5.7 +/-    0.64       6.8 +/-    0.64  0.080 / 0.110