PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-16:57:50
G01     41.2           16.7                5.3 +/-    2.60      12.7 +/-    2.60  0.120 / 0.210
G06     174.9          37.0               11.3 +/-    1.98      17.3 +/-    1.98  0.120 / 0.220
G13     237.7          23.5               11.2 +/-    3.44      22.6 +/-    3.44  0.050 / 0.100
G15     271.7          12.7               10.2 +/-    1.85      26.8 +/-    1.85  0.040 / 0.070
G17     352.5          72.8                8.2 +/-    2.00       8.6 +/-    2.00  0.120 / 0.180
G19     274.2          69.4                8.0 +/-    2.09       8.5 +/-    2.09  0.150 / 0.270
G24     316.9          17.8                9.8 +/-    1.90      22.8 +/-    1.90  0.030 / 0.030
G28     63.4           51.7                7.7 +/-    2.77       9.5 +/-    2.77  0.030 / 0.030
G30     153.5          26.9                9.4 +/-    2.01      17.6 +/-    2.01  0.050 / 0.050