PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-19:12:50
G01     121.5          16.1               16.2 +/-    1.95      39.1 +/-    1.95  0.030 / 0.040
G07     72.0           68.1               15.1 +/-    0.31      16.2 +/-    0.31  0.030 / 0.030
G08     47.5           37.1               12.5 +/-    1.24      19.1 +/-    1.24  0.040 / 0.050
G09     177.8          29.3               19.2 +/-    1.76      34.2 +/-    1.76  0.030 / 0.060
G11     112.2          38.7               17.9 +/-    0.91      26.6 +/-    0.91  0.060 / 0.070
G13     319.0          16.9               12.6 +/-    2.15      30.0 +/-    2.15  0.060 / 0.060
G17     202.4          18.0               19.3 +/-    1.25      44.6 +/-    1.25  0.120 / 0.180
G18     97.7           19.7               14.5 +/-    1.72      32.1 +/-    1.72  0.110 / 0.210
G28     288.3          56.4               15.7 +/-    1.67      18.5 +/-    1.67  0.030 / 0.040
G30     345.2          67.4               14.1 +/-    0.66      15.1 +/-    0.66  0.030 / 0.030