PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-07:43:10
G07     342.7          61.3                5.5 +/-    0.34       6.2 +/-    0.34  0.070 / 0.080
G08     86.4           51.7                6.0 +/-    0.44       7.5 +/-    0.44  0.070 / 0.060
G09     176.2          62.9                6.7 +/-    1.74       7.5 +/-    1.74  0.040 / 0.040
G11     141.1          17.2                5.4 +/-    1.33      12.7 +/-    1.33  0.040 / 0.050
G23     157.7          37.2                6.6 +/-    1.06      10.1 +/-    1.06  0.080 / 0.110
G27     51.2           29.7                4.2 +/-    0.94       7.4 +/-    0.94  0.060 / 0.090
G28     241.3          32.8                6.6 +/-    2.29      10.9 +/-    2.29  0.040 / 0.080
G30     305.2          37.3                2.4 +/-    1.20       3.6 +/-    1.20  0.050 / 0.100