PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-07:12:50
G01     283.2964       41.2581         -0.1280 +/-  2.0292   -0.1825 +/-  2.0292  0.050 / 0.050
G03     313.2645       19.3143          1.6836 +/-  1.0620    3.7672 +/-  1.0620  0.070 / 0.050
G10     123.5654       25.6173          3.0060 +/-  1.9500    5.7914 +/-  1.9500  0.060 / 0.080
G11     256.4425       25.3877          6.4672 +/-  8.1210   12.5250 +/-  8.1210  0.070 / 0.070
G14     34.0275        54.3553          2.5886 +/-  1.7758    3.1054 +/-  1.7758  0.070 / 0.080
G22     314.6408       44.4769          2.8434 +/-  1.1217    3.8604 +/-  1.1217  0.090 / 0.100
G25     57.3956        16.8344          1.7159 +/-  2.0161    4.0808 +/-  2.0161  0.040 / 0.040
G26     154.2855       16.7976          5.3971 +/-  3.3130   12.8472 +/-  3.3130  0.050 / 0.050
G31     93.8651        79.9036          3.1905 +/-  0.5286    3.2355 +/-  0.5286  0.040 / 0.050
G32     55.4511        38.9742          4.1139 +/-  1.6187    6.0860 +/-  1.6187  0.040 / 0.040