PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-06:57:40
G07     40.6           69.4                5.8 +/-    0.48       6.1 +/-    0.48  0.030 / 0.040
G08     53.2           41.3                4.5 +/-    0.94       6.4 +/-    0.94  0.050 / 0.040
G09     174.6          36.8                8.1 +/-    1.10      12.4 +/-    1.10  0.030 / 0.030
G11     121.8          32.7                7.4 +/-    0.53      12.2 +/-    0.53  0.030 / 0.040
G17     198.6          11.9                2.1 +/-    9.17       5.6 +/-    9.17  0.120 / 0.130
G18     106.4          14.1                6.2 +/-    2.25      15.8 +/-    2.25  0.110 / 0.150
G23     161.3          13.8                5.2 +/-    1.54      13.2 +/-    1.54  0.150 / 0.340
G27     38.5           12.6                1.8 +/-    1.60       4.7 +/-    1.60  0.120 / 0.320
G28     267.4          49.0                5.1 +/-    1.04       6.5 +/-    1.04  0.050 / 0.080
G30     325.4          55.0                3.4 +/-    0.65       4.0 +/-    0.65  0.080 / 0.090