PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-19:28:10
G10     249.2          25.9               11.3 +/-    1.60      21.6 +/-    1.60  0.050 / 0.050
G13     54.9           30.5               10.5 +/-    2.04      18.2 +/-    2.04  0.050 / 0.050
G15     98.3           59.8               10.9 +/-    0.93      12.4 +/-    0.93  0.150 / 0.350
G16     296.9          15.7                2.4 +/-    1.65       5.8 +/-    1.65  0.110 / 0.350
G20     267.7          49.8               10.6 +/-    3.84      13.4 +/-    3.84  0.060 / 0.170
G21     332.5          59.3               10.4 +/-    0.52      11.9 +/-    0.52  0.100 / 0.150
G26     269.5          16.1                7.7 +/-    3.58      18.6 +/-    3.58  0.030 / 0.030
G29     164.2          52.2               12.3 +/-    0.67      15.1 +/-    0.67  0.030 / 0.030