PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/25-20:12:50
G01     127.0          11.1               -1.4 +/-   48.15      -3.9 +/-   48.15  0.030 / 0.030
G07     64.7           66.8               14.3 +/-    0.44      15.4 +/-    0.44  0.030 / 0.030
G08     50.0           38.6               12.4 +/-    1.50      18.4 +/-    1.50  0.150 / 0.110
G09     178.7          37.6               14.9 +/-    1.09      22.6 +/-    1.09  0.100 / 0.120
G11     117.0          35.7               16.1 +/-    0.82      25.2 +/-    0.82  0.080 / 0.070
G13     320.9          12.0               -5.4 +/-   16.24     -14.4 +/-   16.24  0.100 / 0.080
G17     199.0          15.6               17.9 +/-    2.79      43.8 +/-    2.79  0.110 / 0.250
G18     101.3          16.4               13.8 +/-    2.22      33.2 +/-    2.22  0.110 / 0.320
G28     271.2          49.6               14.6 +/-    2.50      18.5 +/-    2.50  0.030 / 0.040
G30     333.2          60.9               12.7 +/-    0.76      14.3 +/-    0.76  0.030 / 0.030