PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-09:27:50
G01     68.7           32.6                4.9 +/-    0.46       8.1 +/-    0.46  0.060 / 0.060
G07     138.3          28.1                7.6 +/-    1.16      13.8 +/-    1.16  0.040 / 0.050
G11     52.4           28.5                2.4 +/-    0.64       4.3 +/-    0.64  0.090 / 0.110
G13     274.4          36.7                7.1 +/-    1.26      10.9 +/-    1.26  0.050 / 0.120
G15     301.4          15.7                1.2 +/-    3.23       2.9 +/-    3.23  0.080 / 0.130
G17     238.6          72.7                7.4 +/-    0.68       7.7 +/-    0.68  0.050 / 0.110
G19     225.7          45.3                8.6 +/-    0.80      11.6 +/-    0.80  0.120 / 0.360
G28     23.6           58.6                4.1 +/-    0.45       4.7 +/-    0.45  0.090 / 0.290
G30     136.6          60.4                8.7 +/-    0.94       9.9 +/-    0.94  0.040 / 0.080