PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-09:28:10
G07     343.5          61.7                2.8 +/-    0.79       3.2 +/-    0.79  0.110 / 0.090
G08     100.6          53.4                4.3 +/-    1.15       5.3 +/-    1.15  0.060 / 0.110
G09     187.3          70.5                4.5 +/-    0.52       4.8 +/-    0.52  0.030 / 0.040
G11     144.0          16.0                4.7 +/-    2.85      11.3 +/-    2.85  0.030 / 0.040
G23     155.5          35.3                4.8 +/-    0.91       7.6 +/-    0.91  0.020 / 0.020
G27     52.6           30.3                3.6 +/-    1.21       6.3 +/-    1.21  0.030 / 0.030
G28     237.8          25.9                4.6 +/-    2.67       8.8 +/-    2.67  0.040 / 0.040
G30     304.5          37.4                3.7 +/-    1.06       5.7 +/-    1.06  0.030 / 0.040