PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-14:43:00
G01     101.6          27.8                8.3 +/-    1.34      15.2 +/-    1.34  0.040 / 0.020
G07     115.0          50.8                9.8 +/-    0.49      12.3 +/-    0.49  0.040 / 0.020
G08     41.6           14.4                6.7 +/-    2.36      17.0 +/-    2.36  0.040 / 0.040
G11     79.5           40.1               10.1 +/-    1.26      14.7 +/-    1.26  0.040 / 0.040
G13     307.0          30.0                8.6 +/-    1.45      15.0 +/-    1.45  0.110 / 0.130
G17     207.4          45.4                9.2 +/-    1.27      12.4 +/-    1.27  0.080 / 0.130
G19     210.2          19.1                9.5 +/-    1.87      21.3 +/-    1.87  0.040 / 0.070
G28     327.9          61.4                8.8 +/-    0.49       9.8 +/-    0.49  0.040 / 0.050
G30     34.6           79.4                9.6 +/-    0.48       9.7 +/-    0.48  0.060 / 0.100