PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-16:27:20
G08     94.8           52.0               10.0 +/-    0.52      12.3 +/-    0.52  0.150 / 0.380
G09     191.8          72.6                8.4 +/-    0.72       8.8 +/-    0.72  0.150 / 0.270
G11     143.4          15.5               12.1 +/-    2.48      29.8 +/-    2.48  0.070 / 0.210
G23     156.1          39.1               11.4 +/-    0.90      16.8 +/-    0.90  0.080 / 0.190
G27     54.4           31.7                7.7 +/-    0.58      13.0 +/-    0.58  0.060 / 0.080
G28     237.4          26.8               10.8 +/-    1.30      20.3 +/-    1.30  0.070 / 0.090
G30     304.8          38.4                7.8 +/-    0.88      11.6 +/-    0.88  0.040 / 0.030