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          3.8228 +/-  0.9508    5.4489 +/-  0.9508  0.070 / 0.100
G03     313.2645       19.3143          2.4055 +/-  1.9455    5.3824 +/-  1.9455  0.060 / 0.090
G10     123.5654       25.6173          5.0011 +/-  1.1700    9.6352 +/-  1.1700  0.070 / 0.230
G11     256.4425       25.3877          6.5511 +/-  1.0666   12.6874 +/-  1.0666  0.070 / 0.190
G14     34.0275        54.3553          3.1635 +/-  0.4889    3.7951 +/-  0.4889  0.150 / 0.270
G22     314.6408       44.4769          2.1308 +/-  1.2761    2.8929 +/-  1.2761  0.160 / 0.350
G25     57.3956        16.8344          2.2571 +/-  0.7011    5.3680 +/-  0.7011  0.050 / 0.090
G26     154.2855       16.7976          5.7774 +/-  4.0948   13.7525 +/-  4.0948  0.080 / 0.100
G31     93.8651        79.9036          4.0756 +/-  0.5628    4.1331 +/-  0.5628  0.070 / 0.070
G32     55.4511        38.9742          3.0685 +/-  0.6815    4.5395 +/-  0.6815  0.040 / 0.060