PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-09:12:30
G01     226.1080       17.0944          3.0330 +/-  4.1551    7.1673 +/-  4.1551  0.070 / 0.120
G03     291.1506       65.4466          3.2593 +/-  0.6905    3.5460 +/-  0.6905  0.050 / 0.110
G14     87.4047        22.7111          1.8253 +/-  1.6433    3.7624 +/-  1.6433  0.040 / 0.040
G16     147.9296       44.8768          6.6189 +/-  0.8516    8.9347 +/-  0.8516  0.040 / 0.040
G22     212.0215       70.7121          5.6668 +/-  0.5529    5.9668 +/-  0.5529  0.030 / 0.090
G23     306.4549       36.0731          3.4601 +/-  1.2707    5.3843 +/-  1.2707  0.040 / 0.080
G26     99.6551        54.4401          4.8741 +/-  0.7197    5.8420 +/-  0.7197  0.130 / 0.330
G31     44.9365        32.2738          2.4190 +/-  0.8608    4.0449 +/-  0.8608  0.110 / 0.290