PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-08:58:00
G01     231.1640       21.8477          5.5853 +/-  1.5797   11.7519 +/-  1.5797  0.070 / 0.140
G03     302.8855       60.5265          4.3165 +/-  1.2482    4.8797 +/-  1.2482  0.050 / 0.120
G14     81.4451        26.8136          2.3437 +/-  0.7753    4.3957 +/-  0.7753  0.030 / 0.030
G16     152.8341       38.1285          5.6056 +/-  1.1507    8.4127 +/-  1.1507  0.030 / 0.030
G22     232.7983       75.3351          4.5741 +/-  0.9387    4.7118 +/-  0.9387  0.060 / 0.090
G23     301.4715       31.4480          3.3798 +/-  1.1973    5.7457 +/-  1.1973  0.070 / 0.100
G26     111.6810       52.0781          4.7108 +/-  0.5070    5.7960 +/-  0.5070  0.090 / 0.360
G31     42.6407        38.2041          1.6387 +/-  0.5380    2.4561 +/-  0.5380  0.100 / 0.300
G32     93.9352        10.7195          2.0566 +/-  1.9732    5.6494 +/-  1.9732  0.110 / 0.200