PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-05:28:00
G07     2.1            66.1                5.0 +/-    0.51       5.4 +/-    0.51  0.060 / 0.070
G08     74.7           51.6                5.6 +/-    0.66       6.9 +/-    0.66  0.060 / 0.060
G09     178.2          55.6                6.3 +/-    0.30       7.5 +/-    0.30  0.120 / 0.140
G11     137.8          23.4                6.6 +/-    3.04      13.4 +/-    3.04  0.120 / 0.190
G23     159.0          26.1                4.4 +/-    1.89       8.5 +/-    1.89  0.030 / 0.030
G27     44.0           22.5                3.0 +/-    2.62       6.2 +/-    2.62  0.040 / 0.040
G28     247.0          33.5                5.4 +/-    2.01       8.8 +/-    2.01  0.030 / 0.040
G30     312.1          43.3                4.5 +/-    0.66       6.2 +/-    0.66  0.040 / 0.040