PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-17:42:50
G01     224.9          16.1               11.8 +/-    4.16      28.5 +/-    4.16  0.030 / 0.040
G03     279.2          70.2                9.8 +/-    1.32      10.4 +/-    1.32  0.040 / 0.040
G14     88.1           22.4                8.4 +/-    1.31      17.5 +/-    1.31  0.350 / 0.280
G16     150.3          44.0               11.2 +/-    0.87      15.3 +/-    0.87  0.330 / 0.280
G22     208.1          68.4               11.0 +/-    0.60      11.7 +/-    0.60  0.100 / 0.210
G23     307.5          37.0                9.8 +/-    1.67      15.0 +/-    1.67  0.110 / 0.210
G26     105.6          56.0               10.9 +/-    0.76      12.8 +/-    0.76  0.040 / 0.060
G31     44.9           34.2                7.9 +/-    0.76      12.7 +/-    0.76  0.040 / 0.070