PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-19:28:00
G07     123.6          41.9               13.9 +/-    0.84      19.6 +/-    0.84  0.050 / 0.060
G11     70.8           40.8               12.9 +/-    0.45      18.5 +/-    0.45  0.040 / 0.070
G13     297.6          35.7               12.9 +/-    1.28      20.2 +/-    1.28  0.050 / 0.070
G17     211.2          50.9               15.7 +/-    0.38      19.6 +/-    0.38  0.030 / 0.070
G18     64.9           23.5               11.1 +/-    0.56      22.4 +/-    0.56  0.030 / 0.040
G19     212.5          24.4               18.7 +/-    2.24      37.0 +/-    2.24  0.030 / 0.030
G28     332.8          61.4               10.5 +/-    1.25      11.8 +/-    1.25  0.170 / 0.220
G30     96.7           76.6               12.5 +/-    0.73      12.9 +/-    0.73  0.130 / 0.210