PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-21:27:50
G10     257.5          32.2               11.2 +/-    2.01      18.7 +/-    2.01  0.040 / 0.050
G13     47.3           24.9                9.9 +/-    0.70      19.4 +/-    0.70  0.040 / 0.050
G15     79.6           58.8               11.1 +/-    0.73      12.7 +/-    0.73  0.140 / 0.250
G16     287.3          14.8                7.4 +/-    1.95      18.4 +/-    1.95  0.180 / 0.320
G20     281.0          55.5               10.9 +/-    0.50      13.0 +/-    0.50  0.060 / 0.240
G21     344.1          65.4                8.3 +/-    1.03       9.1 +/-    1.03  0.070 / 0.210
G26     260.3          12.3               11.8 +/-    2.43      31.4 +/-    2.43  0.120 / 0.410
G27     322.2          10.5              -12.1 +/-   27.24     -33.5 +/-   27.24  0.120 / 0.370
G29     166.7          42.1               12.9 +/-    1.36      18.2 +/-    1.36  0.020 / 0.040