PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-04:27:50
G01     225.9          16.7                6.5 +/-    1.94      15.6 +/-    1.94  0.030 / 0.040
G03     288.1          67.0                3.6 +/-    0.91       3.8 +/-    0.91  0.040 / 0.040
G09     295.8          12.1                4.5 +/-    4.03      12.0 +/-    4.03  0.050 / 0.090
G14     86.7           24.6                4.8 +/-    0.98       9.5 +/-    0.98  0.050 / 0.080
G16     143.8          46.3                8.2 +/-    1.19      10.9 +/-    1.19  0.040 / 0.050
G22     217.5          70.3                5.7 +/-    0.97       6.1 +/-    0.97  0.040 / 0.050
G23     307.3          37.1                5.1 +/-    1.63       7.9 +/-    1.63  0.140 / 0.330
G26     94.6           54.0                6.3 +/-    0.75       7.6 +/-    0.75  0.140 / 0.240
G31     45.7           31.0                3.6 +/-    0.72       6.3 +/-    0.72  0.100 / 0.220