PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-17:42:50
G01     104.4          27.0               17.3 +/-    1.66      32.3 +/-    1.66  0.260 / 0.270
G07     110.7          56.6               18.1 +/-    0.36      21.3 +/-    0.36  0.130 / 0.160
G08     41.9           19.6               13.3 +/-    1.54      29.5 +/-    1.54  0.030 / 0.040
G09     174.2          11.1               21.0 +/-    1.29      57.2 +/-    1.29  0.030 / 0.040
G11     86.0           43.0               17.7 +/-    0.72      24.6 +/-    0.72  0.030 / 0.030
G13     307.5          30.2               19.5 +/-    0.76      34.0 +/-    0.76  0.030 / 0.030
G17     207.7          38.2               20.1 +/-    1.19      30.1 +/-    1.19  0.070 / 0.110
G18     77.7           24.7               19.0 +/-    1.52      37.4 +/-    1.52  0.070 / 0.100
G28     323.6          61.4               16.8 +/-    0.64      18.8 +/-    0.64  0.080 / 0.130
G30     39.8           79.2               19.1 +/-    0.81      19.4 +/-    0.81  0.070 / 0.120