PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-06:57:40
G07     12.4           67.6                4.7 +/-    0.52       5.1 +/-    0.52  0.030 / 0.040
G08     70.1           51.0                5.1 +/-    0.80       6.3 +/-    0.80  0.040 / 0.040
G09     178.6          52.3                7.6 +/-    0.94       9.4 +/-    0.94  0.130 / 0.310
G11     134.4          26.1                6.2 +/-    2.19      11.9 +/-    2.19  0.130 / 0.250
G23     159.3          21.7                4.2 +/-    2.72       8.8 +/-    2.72  0.040 / 0.040
G27     42.1           19.8                3.2 +/-    3.15       7.1 +/-    3.15  0.060 / 0.050
G28     250.7          36.6                6.9 +/-    1.39      10.6 +/-    1.39  0.060 / 0.050
G30     315.6          46.7                3.4 +/-    0.94       4.4 +/-    0.94  0.060 / 0.050