PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-05:42:40
G01     318.7361       18.1655          4.8576 +/-  0.7175   11.1801 +/-  0.7175  0.030 / 0.010
G08     255.7322       13.1679          6.9425 +/-  1.7777   18.0418 +/-  1.7777  0.030 / 0.020
G10     78.5473        54.2682          2.8874 +/-  0.5263    3.4671 +/-  0.5263  0.220 / 0.100
G11     301.0256       25.2927          4.5129 +/-  2.3706    8.7591 +/-  2.3706  0.200 / 0.080
G14     302.0391       71.4585          4.7562 +/-  0.7848    4.9882 +/-  0.7848  0.080 / 0.120
G18     100.7655       31.0032          4.2163 +/-  0.8137    7.2325 +/-  0.8137  0.110 / 0.160
G22     300.6030       11.7443          5.7145 +/-  2.5864   15.3458 +/-  2.5864  0.130 / 0.410
G31     175.7699       42.1957          7.4826 +/-  1.1935   10.5106 +/-  1.1935  0.160 / 0.340
G32     5.7965         67.7877          3.2817 +/-  0.6109    3.5151 +/-  0.6109  0.070 / 0.040