PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-18:43:00
G10     270.3          40.4                9.8 +/-    1.56      14.2 +/-    1.56  0.240 / 0.380
G13     40.5           15.7               10.2 +/-    2.69      24.8 +/-    2.69  0.120 / 0.250
G15     58.5           49.7                9.3 +/-    1.20      11.8 +/-    1.20  0.220 / 0.150
G16     276.4          11.2                7.9 +/-    3.89      21.4 +/-    3.89  0.130 / 0.250
G20     303.4          61.6                8.6 +/-    1.26       9.6 +/-    1.26  0.040 / 0.040
G21     14.4           73.8               -2.6 +/-    0.41      -2.7 +/-    0.41  0.040 / 0.040
G24     114.7          16.2               11.5 +/-    1.90      27.9 +/-    1.90  0.110 / 0.150
G27     318.0          19.7                7.7 +/-    2.54      17.0 +/-    2.54  0.120 / 0.160
G29     167.9          28.1               11.9 +/-    1.75      21.8 +/-    1.75  0.170 / 0.440
G32     204.6          12.1                4.6 +/-   24.16      12.2 +/-   24.16  0.230 / 0.480