PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-21:57:40
G02     200.3          23.3               21.2 +/-    2.90      43.0 +/-    2.90  0.080 / 0.110
G06     172.7          54.0               15.1 +/-    0.62      18.2 +/-    0.62  0.080 / 0.130
G13     224.7          11.9               19.0 +/-    2.84      50.8 +/-    2.84  0.050 / 0.070
G17     25.1           57.6               10.7 +/-    0.77      12.4 +/-    0.77  0.050 / 0.080
G19     330.5          70.7                9.3 +/-    0.55       9.8 +/-    0.55  0.270 / 0.330
G24     307.6          32.0                9.2 +/-    1.49      15.5 +/-    1.49  0.340 / 0.490
G28     87.2           42.1               11.2 +/-    1.31      15.8 +/-    1.31  0.040 / 0.030
G30     156.8          11.1               20.6 +/-    3.58      56.1 +/-    3.58  0.040 / 0.030