PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-10:57:50
G03     201.6904       41.2445          4.4437 +/-  1.3120    6.3353 +/-  1.3120  0.030 / 0.060
G07     273.9430       29.4108          3.5060 +/-  1.5640    6.2160 +/-  1.5640  0.030 / 0.040
G08     151.7620       13.5567          1.1974 +/-  3.7341    3.0833 +/-  3.7341  0.060 / 0.200
G09     318.7848       45.9275          3.1201 +/-  1.3314    4.1499 +/-  1.3314  0.070 / 0.180
G16     56.3437        57.1743          5.1983 +/-  0.6583    6.0595 +/-  0.6583  0.030 / 0.050
G22     181.5887       22.8219          3.1403 +/-  2.9834    6.4558 +/-  2.9834  0.040 / 0.040
G23     351.9361       75.1649          4.7237 +/-  0.6507    4.8693 +/-  0.6507  0.050 / 0.080
G26     44.3000        29.1075          1.3119 +/-  1.5306    2.3410 +/-  1.5306  0.060 / 0.070
G27     117.9649       23.3579          5.0134 +/-  1.6057   10.1767 +/-  1.6057  0.060 / 0.110