PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-18:57:40
G08     270.0          19.5               10.8 +/-    1.40      24.1 +/-    1.40  0.150 / 0.370
G10     58.8           57.7                8.5 +/-    0.42       9.8 +/-    0.42  0.150 / 0.360
G11     315.5          12.7                7.4 +/-    1.94      19.4 +/-    1.94  0.040 / 0.060
G14     255.0          60.1               10.3 +/-    0.71      11.7 +/-    0.71  0.040 / 0.060
G20     94.4           35.8                8.5 +/-    0.31      13.3 +/-    0.31  0.110 / 0.370
G21     154.6          17.9                9.7 +/-    3.55      22.4 +/-    3.55  0.090 / 0.360
G24     41.6           12.8                5.3 +/-    1.69      13.8 +/-    1.69  0.030 / 0.040
G27     233.6          18.2               11.0 +/-    1.30      25.4 +/-    1.30  0.030 / 0.030
G31     178.6          27.6                9.8 +/-    0.54      18.0 +/-    0.54  0.160 / 0.250
G32     335.4          75.4               10.2 +/-    0.56      10.5 +/-    0.56  0.160 / 0.300