PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-10:27:50
G01     104.6          26.7                5.2 +/-    1.71       9.8 +/-    1.71  0.080 / 0.140
G07     111.1          54.4                6.3 +/-    0.65       7.6 +/-    0.65  0.080 / 0.130
G08     41.6           16.8                3.3 +/-    1.84       7.8 +/-    1.84  0.030 / 0.040
G09     173.3          10.4                4.5 +/-    5.12      12.4 +/-    5.12  0.030 / 0.040
G11     84.3           41.2                5.0 +/-    1.26       7.2 +/-    1.26  0.030 / 0.020
G13     309.3          28.3                2.8 +/-    1.63       5.0 +/-    1.63  0.020 / 0.030
G17     206.2          42.6                7.0 +/-    0.92       9.8 +/-    0.92  0.170 / 0.130
G19     209.5          16.6                5.8 +/-    2.17      13.8 +/-    2.17  0.150 / 0.150
G28     323.5          61.3                3.1 +/-    0.58       3.5 +/-    0.58  0.050 / 0.060
G30     28.3           78.6                4.9 +/-    1.06       5.0 +/-    1.06  0.040 / 0.050