PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/16-22:13:10
G03     209.8          54.6                8.9 +/-    0.72      10.6 +/-    0.72  0.060 / 0.070
G07     260.6          18.5                9.2 +/-    2.01      21.1 +/-    2.01  0.070 / 0.110
G09     314.7          37.4                6.9 +/-    0.94      10.5 +/-    0.94  0.040 / 0.040
G16     80.8           62.1                6.2 +/-    0.76       6.9 +/-    0.76  0.040 / 0.050
G22     188.7          37.3                8.5 +/-    0.75      12.9 +/-    0.75  0.050 / 0.050
G23     333.8          63.4                6.8 +/-    0.82       7.5 +/-    0.82  0.040 / 0.050
G26     50.7           39.7                3.8 +/-    1.72       5.5 +/-    1.72  0.040 / 0.040
G27     130.6          13.2               10.9 +/-    2.23      28.2 +/-    2.23  0.040 / 0.050