PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-20:27:50
G01     229.6          22.9               11.1 +/-    3.15      22.7 +/-    3.15  0.040 / 0.030
G03     305.4          60.5               10.1 +/-    0.72      11.4 +/-    0.72  0.040 / 0.030
G14     76.1           32.8               10.1 +/-    1.15      16.7 +/-    1.15  0.070 / 0.120
G16     150.7          36.7               12.1 +/-    1.06      18.6 +/-    1.06  0.080 / 0.130
G22     248.8          74.7               10.4 +/-    0.68      10.7 +/-    0.68  0.050 / 0.050
G23     300.6          31.0               10.5 +/-    1.71      18.0 +/-    1.71  0.030 / 0.040
G26     113.5          51.3               11.3 +/-    0.86      14.1 +/-    0.86  0.080 / 0.100
G31     42.6           40.5                7.9 +/-    1.46      11.5 +/-    1.46  0.080 / 0.090
G32     92.9           9.7                13.8 +/-    2.87      38.6 +/-    2.87  0.050 / 0.080