PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-21:58:00
G02     200.2          23.0               20.3 +/-    2.75      41.5 +/-    2.75  0.250 / 0.270
G06     169.3          56.2               16.1 +/-    0.60      18.9 +/-    0.60  0.200 / 0.230
G13     226.3          12.0               18.9 +/-    1.89      50.3 +/-    1.89  0.130 / 0.130
G17     18.3           61.3               12.6 +/-    0.63      14.1 +/-    0.63  0.070 / 0.130
G19     323.8          70.6               12.8 +/-    0.46      13.5 +/-    0.46  0.070 / 0.090
G24     308.9          30.8               12.0 +/-    1.69      20.7 +/-    1.69  0.050 / 0.090
G28     90.0           38.6               14.1 +/-    1.65      21.1 +/-    1.65  0.030 / 0.040
G30     157.0          12.3               19.6 +/-    3.72      52.1 +/-    3.72  0.040 / 0.040