PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/01-21:43:00
G10     255.1          30.4               13.5 +/-    2.16      23.3 +/-    2.16  0.050 / 0.050
G13     49.1           26.6               10.0 +/-    0.97      18.9 +/-    0.97  0.040 / 0.060
G15     82.6           58.7               10.6 +/-    0.66      12.2 +/-    0.66  0.130 / 0.530
G16     288.7          15.6                8.3 +/-    1.92      20.3 +/-    1.92  0.140 / 0.490
G20     255.9          16.1                6.0 +/-    0.84      14.5 +/-    0.84  0.070 / 0.210
G21     338.5          62.9                9.7 +/-    0.46      10.7 +/-    0.46  0.070 / 0.200
G26     261.5          13.5               11.5 +/-    0.98      29.7 +/-    0.98  0.030 / 0.040
G29     166.5          45.6               11.9 +/-    1.03      15.9 +/-    1.03  0.030 / 0.040