PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-19:42:50
G01     102.5          27.2               12.7 +/-    0.81      23.5 +/-    0.81  0.030 / 0.050
G07     115.3          49.0               13.8 +/-    0.60      17.7 +/-    0.60  0.030 / 0.040
G08     41.5           16.2                9.1 +/-    2.41      22.0 +/-    2.41  0.050 / 0.050
G09     174.7          11.3               12.2 +/-    3.73      33.2 +/-    3.73  0.040 / 0.050
G11     81.5           42.7               13.2 +/-    0.73      18.4 +/-    0.73  0.090 / 0.140
G13     305.8          31.8               11.5 +/-    1.35      19.4 +/-    1.35  0.110 / 0.190
G17     206.6          42.7               14.0 +/-    0.87      19.5 +/-    0.87  0.160 / 0.390
G18     73.5           23.9               10.3 +/-    1.49      20.6 +/-    1.49  0.190 / 0.430
G28     316.9          60.2               11.7 +/-    1.05      13.3 +/-    1.05  0.040 / 0.020
G30     53.1           79.4               12.6 +/-    0.44      12.8 +/-    0.44  0.030 / 0.020