PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/20-08:12:50
G01     248.0382       33.9402          6.4915 +/-  1.3700   10.5093 +/-  1.3700  0.120 / 0.150
G03     315.4886       43.6618          3.4585 +/-  1.2350    4.7518 +/-  1.2350  0.110 / 0.130
G11     232.5667       11.6786          3.7426 +/-  1.3369   10.0655 +/-  1.3369  0.120 / 0.100
G14     64.0466        37.8760          3.2972 +/-  1.1992    4.9700 +/-  1.1992  0.120 / 0.090
G16     162.4427       20.2522          4.0933 +/-  1.5540    8.9513 +/-  1.5540  0.080 / 0.170
G22     300.5755       69.6279          3.2788 +/-  0.7915    3.4733 +/-  0.7915  0.080 / 0.230
G23     287.8077       19.7494          4.2189 +/-  2.1065    9.3400 +/-  2.1065  0.050 / 0.090
G26     135.2564       39.4771          4.8412 +/-  0.9028    7.1022 +/-  0.9028  0.050 / 0.070
G31     40.2333        55.9201          1.7272 +/-  0.5667    2.0386 +/-  0.5667  0.040 / 0.030
G32     79.0882        21.9153          2.8635 +/-  1.4274    6.0153 +/-  1.4274  0.040 / 0.030