PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-00:42:40
G07     338.3          59.7                5.6 +/-    1.15       6.4 +/-    1.15  0.110 / 0.160
G08     94.3           52.7                6.5 +/-    0.72       8.0 +/-    0.72  0.070 / 0.140
G09     189.7          70.8                7.6 +/-    0.66       7.9 +/-    0.66  0.030 / 0.050
G11     144.8          14.6                8.4 +/-    2.23      21.0 +/-    2.23  0.030 / 0.050
G23     156.5          37.9                8.7 +/-    1.40      13.1 +/-    1.40  0.030 / 0.040
G27     51.2           29.0                2.8 +/-    1.15       5.0 +/-    1.15  0.030 / 0.050
G28     240.6          33.0                6.2 +/-    1.75      10.3 +/-    1.75  0.040 / 0.030
G30     306.8          40.0                4.6 +/-    0.80       6.7 +/-    0.80  0.030 / 0.040