PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-20:57:30
G10     252.6          29.9               13.2 +/-    0.66      23.2 +/-    0.66  0.040 / 0.050
G13     51.0           27.4                8.9 +/-    2.02      16.5 +/-    2.02  0.040 / 0.060
G15     82.8           57.5               11.0 +/-    0.36      12.8 +/-    0.36  0.180 / 0.760
G16     293.3          15.6                9.0 +/-    7.40      22.1 +/-    7.40  0.200 / 0.910
G20     273.8          52.7               12.6 +/-    0.51      15.3 +/-    0.51  0.070 / 0.180
G21     336.1          61.0               10.6 +/-    0.53      11.9 +/-    0.53  0.070 / 0.230
G26     266.0          14.6               12.7 +/-    1.43      32.0 +/-    1.43  0.020 / 0.050
G29     164.2          47.8               12.7 +/-    1.45      16.5 +/-    1.45  0.030 / 0.050