PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-05:43:10
G01     318.5870       18.5347          5.0167 +/-  1.8688   11.4419 +/-  1.8688  0.020 / 0.010
G08     255.3406       12.9377          4.6438 +/- 12.0622   12.1333 +/- 12.0622  0.020 / 0.010
G10     79.2669        54.0248          1.6217 +/-  1.3486    1.9525 +/-  1.3486  0.100 / 0.130
G11     300.6068       25.4932          3.0728 +/-  1.8272    5.9369 +/-  1.8272  0.160 / 0.130
G14     303.5430       71.5104          3.3061 +/-  0.4814    3.4665 +/-  0.4814  0.040 / 0.010
G18     101.1631       30.6938         -3.5213 +/- 36.0448   -6.0788 +/- 36.0448  0.040 / 0.020
G22     300.8364       12.0598          4.0045 +/-  4.9013   10.6773 +/-  4.9013  0.040 / 0.040
G31     175.6613       42.6949          5.3900 +/-  1.6444    7.5137 +/-  1.6444  0.040 / 0.040
G32     6.7053         67.4750         -1.0168 +/-  0.5956   -1.0913 +/-  0.5956  0.190 / 0.240