PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-09:12:40
G07     332.7          57.8                4.5 +/-    0.63       5.2 +/-    0.63  0.030 / 0.060
G08     100.2          50.6                7.3 +/-    0.60       9.1 +/-    0.60  0.030 / 0.050
G09     187.1          74.6                8.7 +/-    0.78       9.0 +/-    0.78  0.030 / 0.040
G11     145.6          11.4                6.1 +/-    2.88      16.5 +/-    2.88  0.040 / 0.040
G16     45.7           12.0                2.4 +/-    1.50       6.3 +/-    1.50  0.130 / 0.120
G23     155.0          46.4                7.9 +/-    0.71      10.5 +/-    0.71  0.080 / 0.100
G27     56.7           32.1                4.7 +/-    1.36       7.9 +/-    1.36  0.140 / 0.180
G28     235.6          27.9                5.6 +/-    2.10      10.2 +/-    2.10  0.340 / 0.320
G30     299.0          32.0                4.2 +/-    2.00       7.0 +/-    2.00  0.040 / 0.050