PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-17:12:30
G07     340.3          60.5               11.6 +/-    1.24      13.1 +/-    1.24  0.030 / 0.050
G08     94.4           53.7               11.6 +/-    0.36      14.0 +/-    0.36  0.030 / 0.070
G09     186.5          68.2               13.9 +/-    0.91      14.8 +/-    0.91  0.030 / 0.050
G11     143.4          16.2               15.2 +/-    1.18      36.8 +/-    1.18  0.030 / 0.050
G23     155.4          31.3               14.5 +/-    0.92      24.7 +/-    0.92  0.050 / 0.110
G27     50.1           28.4                7.8 +/-    0.88      14.2 +/-    0.88  0.080 / 0.110
G28     241.9          33.9               16.1 +/-    1.52      26.0 +/-    1.52  0.060 / 0.150
G30     307.0          39.6               10.0 +/-    0.93      14.6 +/-    0.93  0.070 / 0.150