PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/14-20:57:50
G01     127.0          11.1              -16.0 +/-   26.76     -43.5 +/-   26.76  0.030 / 0.030
G07     63.8           67.0               14.5 +/-    0.70      15.6 +/-    0.70  0.030 / 0.030
G08     49.9           38.4               12.2 +/-    1.64      18.2 +/-    1.64  0.130 / 0.110
G09     178.5          37.4               16.7 +/-    0.76      25.3 +/-    0.76  0.140 / 0.120
G11     116.9          35.7               16.2 +/-    0.81      25.4 +/-    0.81  0.050 / 0.080
G13     321.0          11.9               -1.5 +/-   22.78      -4.0 +/-   22.78  0.070 / 0.100
G17     198.9          15.8               18.9 +/-    2.58      46.1 +/-    2.58  0.250 / 0.490
G18     101.0          16.4               14.5 +/-    2.04      34.8 +/-    2.04  0.040 / 0.080
G28     271.3          49.7               14.9 +/-    2.45      18.8 +/-    2.45  0.070 / 0.040
G30     332.7          60.6               13.1 +/-    0.55      14.7 +/-    0.55  0.130 / 0.240