PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-22:27:50
G03     188.9          17.9                9.7 +/-    1.55      22.4 +/-    1.55  0.060 / 0.080
G07     292.5          38.6                6.9 +/-    1.79      10.2 +/-    1.79  0.080 / 0.070
G08     141.2          29.5               12.5 +/-    2.29      22.1 +/-    2.29  0.050 / 0.100
G09     319.7          64.1                6.8 +/-    0.55       7.5 +/-    0.55  0.070 / 0.140
G16     42.4           38.2                6.4 +/-    0.93       9.6 +/-    0.93  0.080 / 0.090
G23     122.8          76.7                7.1 +/-    0.87       7.2 +/-    0.87  0.050 / 0.080
G26     43.8           9.8                 6.7 +/-    2.67      18.6 +/-    2.67  0.070 / 0.090
G27     95.5           34.6                9.8 +/-    1.41      15.6 +/-    1.41  0.060 / 0.110
G30     276.8          17.0                8.5 +/-    1.70      20.2 +/-    1.70  0.030 / 0.030