PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-17:13:10
G03     188.1          16.9               11.4 +/-    2.10      27.0 +/-    2.10  0.070 / 0.050
G07     292.7          38.5                9.6 +/-    1.98      14.4 +/-    1.98  0.080 / 0.050
G08     143.7          28.8               10.9 +/-    1.24      19.6 +/-    1.24  0.030 / 0.030
G09     319.6          64.9                8.7 +/-    0.99       9.5 +/-    0.99  0.020 / 0.030
G16     42.1           35.1                8.4 +/-    1.14      13.3 +/-    1.14  0.070 / 0.100
G23     126.3          72.3                9.9 +/-    0.43      10.3 +/-    0.43  0.080 / 0.090
G27     95.5           34.8               10.8 +/-    0.88      17.2 +/-    0.88  0.070 / 0.130
G30     276.5          15.7                8.8 +/-    1.65      21.5 +/-    1.65  0.080 / 0.150