PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-12:27:50
G07     331.0          57.2                3.3 +/-    0.68       3.9 +/-    0.68  0.030 / 0.070
G08     104.1          49.7                4.8 +/-    0.43       6.0 +/-    0.43  0.030 / 0.060
G09     193.9          77.8              -13.3 +/-    6.78     -13.6 +/-    6.78  0.080 / 0.130
G11     146.4          10.1               -7.3 +/-    9.56     -20.4 +/-    9.56  0.120 / 0.130
G16     45.1           12.3                2.9 +/-    2.18       7.6 +/-    2.18  0.050 / 0.090
G23     153.8          48.6                6.5 +/-    0.92       8.3 +/-    0.92  0.050 / 0.080
G27     59.3           33.2                3.3 +/-    0.56       5.5 +/-    0.56  0.040 / 0.050
G28     233.7          25.6              -52.9 +/-   43.76    -101.9 +/-   43.76  0.040 / 0.050
G30     296.6          29.7                2.2 +/-    1.31       3.8 +/-    1.31  0.040 / 0.050