PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-20:13:00
G01     242.0          32.8               10.1 +/-    1.71      16.7 +/-    1.71  0.040 / 0.040
G03     315.3          47.3                7.3 +/-    0.91       9.5 +/-    0.91  0.040 / 0.030
G14     61.8           41.3                9.0 +/-    1.45      12.9 +/-    1.45  0.060 / 0.080
G16     158.8          23.3               10.7 +/-    2.44      21.8 +/-    2.44  0.060 / 0.090
G22     296.9          69.3                8.5 +/-    0.60       9.0 +/-    0.60  0.100 / 0.220
G23     290.2          22.1                9.3 +/-    2.42      19.4 +/-    2.42  0.100 / 0.230
G26     132.0          42.0               10.4 +/-    0.88      14.7 +/-    0.88  0.050 / 0.060
G31     41.0           54.1                8.3 +/-    0.63      10.0 +/-    0.63  0.040 / 0.050
G32     81.8           18.3                9.3 +/-    0.96      21.3 +/-    0.96  0.130 / 0.180