PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-15:42:40
G07     335.1          59.2                9.6 +/-    0.66      10.9 +/-    0.66  0.100 / 0.120
G08     107.8          49.8                9.9 +/-    0.59      12.5 +/-    0.59  0.080 / 0.120
G09     211.6          79.9                9.9 +/-    0.36      10.0 +/-    0.36  0.030 / 0.050
G11     148.2          10.7                4.8 +/-   21.67      13.1 +/-   21.67  0.050 / 0.040
G16     45.0           13.6                8.1 +/-    2.21      20.8 +/-    2.21  0.210 / 0.530
G23     153.2          46.8               11.3 +/-    0.54      14.8 +/-    0.54  0.120 / 0.370
G27     62.2           35.1                9.4 +/-    1.43      15.0 +/-    1.43  0.080 / 0.060
G28     232.1          20.6               10.0 +/-    2.28      21.8 +/-    2.28  0.060 / 0.070
G30     298.9          33.7                8.4 +/-    1.19      13.6 +/-    1.19  0.140 / 0.370