PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/18-16:57:50
G08     267.6          19.1                8.7 +/-    4.36      19.5 +/-    4.36  0.170 / 0.320
G10     61.2           57.1               10.3 +/-    0.80      12.0 +/-    0.80  0.150 / 0.240
G11     315.4          12.7                8.1 +/-    5.15      21.2 +/-    5.15  0.050 / 0.040
G14     258.1          61.9               12.2 +/-    1.10      13.6 +/-    1.10  0.050 / 0.050
G20     96.0           34.2               10.4 +/-    1.08      16.8 +/-    1.08  0.040 / 0.030
G21     154.6          15.9               10.5 +/-    3.02      25.7 +/-    3.02  0.030 / 0.030
G24     41.0           11.8                9.3 +/-    2.20      24.8 +/-    2.20  0.090 / 0.200
G27     232.5          17.3                9.4 +/-    1.69      22.0 +/-    1.69  0.100 / 0.160
G31     179.1          28.0               12.9 +/-    1.97      23.5 +/-    1.97  0.160 / 0.430
G32     341.3          74.7               10.8 +/-    0.66      11.1 +/-    0.66  0.280 / 0.590