PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/20-19:43:00
G01     246.4          35.5               12.1 +/-    1.90      19.0 +/-    1.90  0.040 / 0.040
G03     316.3          43.2                8.7 +/-    1.40      12.1 +/-    1.40  0.040 / 0.050
G11     241.1          11.0               10.6 +/-    4.18      29.0 +/-    4.18  0.050 / 0.080
G14     57.3           43.6                9.4 +/-    1.51      12.9 +/-    1.51  0.050 / 0.080
G16     160.9          19.4               -3.7 +/-   19.26      -8.2 +/-   19.26  0.160 / 0.330
G22     303.9          65.9               11.0 +/-    1.24      11.9 +/-    1.24  0.130 / 0.400
G23     286.9          19.4                9.6 +/-    1.73      21.4 +/-    1.73  0.040 / 0.060
G26     136.4          38.5               12.8 +/-    1.22      19.1 +/-    1.22  0.040 / 0.050
G31     41.6           58.6               10.5 +/-    0.61      12.1 +/-    0.61  0.090 / 0.220
G32     78.3           20.9                9.5 +/-    2.02      20.4 +/-    2.02  0.090 / 0.200