PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-19:12:50
G01     126.4          11.5               17.4 +/-   19.44      46.9 +/-   19.44  0.040 / 0.040
G07     67.5           66.2               12.8 +/-    0.67      13.9 +/-    0.67  0.030 / 0.030
G08     49.8           38.4               11.3 +/-    0.80      16.9 +/-    0.80  0.100 / 0.060
G09     178.8          37.1               16.3 +/-    0.86      24.9 +/-    0.86  0.080 / 0.080
G11     116.5          36.1               16.4 +/-    1.58      25.5 +/-    1.58  0.150 / 0.410
G13     320.8          12.5               -0.6 +/-   19.28      -1.7 +/-   19.28  0.080 / 0.410
G17     199.2          15.8               19.6 +/-    3.46      47.8 +/-    3.46  0.240 / 0.360
G18     101.0          16.7               14.9 +/-    1.67      35.6 +/-    1.67  0.280 / 0.370
G28     271.8          49.7               13.8 +/-    2.66      17.5 +/-    2.66  0.100 / 0.260
G30     334.7          61.8               10.9 +/-    0.69      12.2 +/-    0.69  0.110 / 0.270