PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-12:58:10
G07     341.9903       60.6521          5.0078 +/-  0.7687    5.6552 +/-  0.7687  0.050 / 0.070
G08     92.8560        51.3740          6.0867 +/-  0.4685    7.5504 +/-  0.4685  0.040 / 0.070
G09     184.7234       70.7085          6.3656 +/-  0.7957    6.7028 +/-  0.7957  0.140 / 0.410
G11     141.9256       14.1078          5.8711 +/-  2.4688   14.9211 +/-  2.4688  0.150 / 0.450
G23     156.2471       41.3615          7.4403 +/-  0.7155   10.5879 +/-  0.7155  0.040 / 0.070
G27     52.7781        29.8659          6.2598 +/-  0.7862   10.9930 +/-  0.7862  0.040 / 0.070
G28     238.9157       30.9449          6.0701 +/-  1.8962   10.4250 +/-  1.8962  0.060 / 0.110
G30     301.8166       34.0123          4.7157 +/-  1.4150    7.6239 +/-  1.4150  0.070 / 0.090