PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-06:42:30
G03     208.5          51.2                5.0 +/-    1.06       6.2 +/-    1.06  0.070 / 0.120
G07     263.8          20.7                4.4 +/-    0.92       9.6 +/-    0.92  0.070 / 0.090
G09     315.5          38.4                4.1 +/-    1.85       6.1 +/-    1.85  0.080 / 0.230
G16     69.5           60.3                5.3 +/-    0.67       6.0 +/-    0.67  0.080 / 0.250
G22     187.5          34.4                5.8 +/-    2.01       9.2 +/-    2.01  0.090 / 0.150
G23     336.7          66.2                2.9 +/-    0.62       3.1 +/-    0.62  0.080 / 0.180
G26     47.1           34.3                2.2 +/-    0.44       3.5 +/-    0.44  0.030 / 0.040
G27     128.2          16.1                5.7 +/-    1.04      13.8 +/-    1.04  0.030 / 0.050