PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-11:27:50
G03     195.2238       27.9394          5.2438 +/-  3.0660    9.5948 +/-  3.0660  0.030 / 0.030
G07     287.0766       37.2055          4.3265 +/-  1.8563    6.5980 +/-  1.8563  0.040 / 0.040
G08     143.1532       24.3225          5.4590 +/-  1.5124   10.8345 +/-  1.5124  0.170 / 0.340
G09     321.6516       59.1206          3.8067 +/-  0.7093    4.3572 +/-  0.7093  0.160 / 0.360
G16     44.6914        45.0241          2.8223 +/-  0.6126    3.8018 +/-  0.6126  0.040 / 0.060
G22     177.6636       10.6588          4.5592 +/-  1.6391   12.5404 +/-  1.6391  0.030 / 0.080
G23     67.9361        83.4907          2.7866 +/-  0.6451    2.8029 +/-  0.6451  0.030 / 0.040
G26     42.9387        17.3311          2.7006 +/-  1.5650    6.3446 +/-  1.5650  0.030 / 0.040
G27     104.3300       31.1946          3.9759 +/-  0.6543    6.7938 +/-  0.6543  0.060 / 0.080