PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-20:42:50
G05     47.4           23.1               12.2 +/-    0.72      24.9 +/-    0.72  0.100 / 0.240
G13     81.1           37.5               13.7 +/-    0.72      20.8 +/-    0.72  0.120 / 0.260
G15     128.5          50.3               14.3 +/-    0.69      18.0 +/-    0.69  0.260 / 0.450
G18     243.1          40.1               15.9 +/-    1.71      23.1 +/-    1.71  0.260 / 0.540
G20     25.9           68.6               14.4 +/-    0.63      15.3 +/-    0.63  0.040 / 0.070
G21     311.3          46.4               15.1 +/-    1.05      20.0 +/-    1.05  0.060 / 0.080
G25     198.2          11.0               19.7 +/-    3.11      53.7 +/-    3.11  0.090 / 0.130
G26     293.6          19.3               14.6 +/-    1.34      32.6 +/-    1.34  0.070 / 0.120
G29     151.2          70.9               15.6 +/-    0.65      16.4 +/-    0.65  0.030 / 0.040