PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-07:57:40
G07     12.0           67.4                4.9 +/-    0.48       5.2 +/-    0.48  0.030 / 0.040
G08     72.1           51.9                4.9 +/-    0.67       6.1 +/-    0.67  0.030 / 0.040
G09     179.3          53.5                7.7 +/-    0.84       9.4 +/-    0.84  0.130 / 0.360
G11     134.5          25.7                5.8 +/-    1.52      11.1 +/-    1.52  0.190 / 0.260
G23     159.0          21.8               -7.5 +/-    1.58     -15.7 +/-    1.58  0.050 / 0.050
G27     42.4           20.4                4.2 +/-    2.80       9.3 +/-    2.80  0.040 / 0.050
G28     250.2          36.4                6.7 +/-    1.40      10.4 +/-    1.40  0.040 / 0.050
G30     315.5          46.7                4.6 +/-    1.04       6.1 +/-    1.04  0.050 / 0.040