PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-19:27:50
G07     123.6          41.9               12.9 +/-    1.10      18.2 +/-    1.10  0.040 / 0.060
G08     41.9           9.6                 8.6 +/-    3.71      24.2 +/-    3.71  0.030 / 0.050
G11     70.8           40.8               10.7 +/-    1.22      15.4 +/-    1.22  0.040 / 0.050
G13     297.6          35.7               12.0 +/-    2.02      18.8 +/-    2.02  0.040 / 0.040
G17     211.2          50.9               14.9 +/-    0.68      18.6 +/-    0.68  0.040 / 0.030
G18     64.9           23.5                9.8 +/-    2.02      19.9 +/-    2.02  0.040 / 0.020
G19     212.5          24.4               17.3 +/-    2.23      34.3 +/-    2.23  0.160 / 0.220
G28     332.8          61.4                9.7 +/-    0.78      10.9 +/-    0.78  0.150 / 0.170
G30     96.7           76.6               11.2 +/-    0.66      11.4 +/-    0.66  0.150 / 0.180