PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/02-08:28:00
G07     1.0            65.7                4.4 +/-    0.62       4.7 +/-    0.62  0.030 / 0.040
G08     81.5           53.6                5.7 +/-    1.09       6.9 +/-    1.09  0.030 / 0.040
G09     180.9          59.4                5.7 +/-    0.47       6.5 +/-    0.47  0.170 / 0.130
G11     138.0          22.3                3.7 +/-    1.43       7.6 +/-    1.43  0.210 / 0.110
G23     158.1          26.4                4.1 +/-    1.19       7.7 +/-    1.19  0.050 / 0.040
G27     45.3           24.1                4.0 +/-    2.17       7.9 +/-    2.17  0.050 / 0.040
G28     245.6          32.9                5.8 +/-    1.51       9.5 +/-    1.51  0.040 / 0.030
G30     311.7          43.4                2.7 +/-    1.01       3.8 +/-    1.01  0.040 / 0.050