PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-21:42:50
G01     248.2          36.2               11.8 +/-    1.75      18.3 +/-    1.75  0.040 / 0.040
G03     316.5          41.8                8.7 +/-    0.96      12.3 +/-    0.96  0.040 / 0.050
G11     241.1          11.6               10.9 +/-    2.14      29.4 +/-    2.14  0.050 / 0.070
G14     54.9           45.3                9.5 +/-    1.57      12.8 +/-    1.57  0.050 / 0.080
G22     305.8          64.1                9.1 +/-    0.50      10.0 +/-    0.50  0.070 / 0.060
G23     286.2          19.1               10.1 +/-    0.90      22.7 +/-    0.90  0.050 / 0.070
G25     40.8           10.3                4.2 +/-    4.80      11.7 +/-    4.80  0.130 / 0.350
G26     136.8          37.7               11.1 +/-    1.12      16.7 +/-    1.12  0.110 / 0.530
G31     42.0           58.8                9.3 +/-    0.62      10.7 +/-    0.62  0.040 / 0.040
G32     77.1           21.9                7.8 +/-    1.39      16.4 +/-    1.39  0.040 / 0.040