PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-17:57:40
G01     221.5          12.7               10.0 +/-    4.22      26.2 +/-    4.22  0.050 / 0.040
G03     262.9          71.2                9.1 +/-    0.83       9.5 +/-    0.83  0.040 / 0.040
G09     297.7          11.5                0.4 +/-   31.47       1.2 +/-   31.47  0.130 / 0.300
G14     92.2           19.4                9.1 +/-    1.76      20.4 +/-    1.76  0.120 / 0.230
G16     146.0          48.9               10.2 +/-    1.08      13.1 +/-    1.08  0.140 / 0.410
G22     201.0          63.7                9.8 +/-    0.81      10.8 +/-    0.81  0.120 / 0.180
G23     311.1          40.5                8.4 +/-    1.22      12.1 +/-    1.22  0.140 / 0.260
G26     95.7           57.0               10.0 +/-    1.05      11.7 +/-    1.05  0.160 / 0.260
G31     46.9           30.1                7.3 +/-    1.00      12.8 +/-    1.00  0.050 / 0.050