PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-08:27:40
G07     349.7          63.3                4.8 +/-    0.47       5.4 +/-    0.47  0.040 / 0.040
G08     92.1           53.9                5.7 +/-    0.75       6.9 +/-    0.75  0.030 / 0.030
G09     183.3          65.8                6.0 +/-    0.30       6.6 +/-    0.30  0.030 / 0.030
G11     141.8          18.5                5.3 +/-    1.04      12.1 +/-    1.04  0.030 / 0.030
G23     156.8          32.0                5.3 +/-    1.21       8.9 +/-    1.21  0.080 / 0.140
G27     49.3           27.8                2.7 +/-    1.71       4.9 +/-    1.71  0.060 / 0.120
G28     240.8          28.7                5.5 +/-    2.57       9.8 +/-    2.57  0.040 / 0.040
G30     307.2          39.5                3.9 +/-    1.35       5.7 +/-    1.35  0.040 / 0.040