PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-18:58:00
G05     51.5           12.0                7.8 +/-    1.11      20.9 +/-    1.11  0.140 / 0.180
G10     241.6          20.4               12.2 +/-    1.25      26.6 +/-    1.25  0.240 / 0.250
G13     64.4           33.6                9.8 +/-    0.70      16.0 +/-    0.70  0.050 / 0.070
G15     110.0          56.7               10.9 +/-    0.70      12.8 +/-    0.70  0.040 / 0.060
G16     306.1          15.0                5.7 +/-    3.44      14.2 +/-    3.44  0.060 / 0.120
G20     257.3          44.2                9.3 +/-    1.02      12.6 +/-    1.02  0.050 / 0.120
G21     321.2          51.7               11.4 +/-    1.25      14.1 +/-    1.25  0.150 / 0.650
G26     279.0          18.9                8.8 +/-    1.53      19.9 +/-    1.53  0.170 / 0.640
G29     159.1          63.6               11.7 +/-    1.50      12.9 +/-    1.50  0.030 / 0.050