PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-10:12:30
G03     221.1250       60.7137          5.8556 +/-  1.0615    6.6091 +/-  1.0615  0.050 / 0.050
G07     256.5730       17.1019          3.8792 +/-  3.1369    9.1652 +/-  3.1369  0.030 / 0.050
G09     310.0874       28.3657          1.8337 +/-  0.9352    3.3243 +/-  0.9352  0.040 / 0.070
G16     102.4521       64.9086          6.8965 +/-  0.5893    7.5319 +/-  0.5893  0.050 / 0.080
G22     187.4669       43.1934          4.9498 +/-  1.6656    6.8483 +/-  1.6656  0.030 / 0.050
G23     327.1346       57.0181          4.0252 +/-  1.1243    4.6992 +/-  1.1243  0.030 / 0.040
G26     56.1262        45.8738          2.1833 +/-  1.0327    2.9061 +/-  1.0327  0.060 / 0.120
G31     58.1063        11.5742          1.8916 +/-  2.7435    5.0991 +/-  2.7435  0.090 / 0.100