PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-00:58:10
G02     206.1          44.9               10.9 +/-    0.94      14.7 +/-    0.94  0.040 / 0.050
G06     155.6          75.4                9.7 +/-    0.63      10.0 +/-    0.63  0.050 / 0.060
G12     311.0          20.0                6.3 +/-    0.91      13.8 +/-    0.91  0.070 / 0.120
G17     45.0           41.3                6.9 +/-    2.02       9.9 +/-    2.02  0.080 / 0.140
G19     17.3           59.8                8.1 +/-    1.01       9.2 +/-    1.01  0.040 / 0.040
G24     284.7          42.3                3.9 +/-    1.73       5.4 +/-    1.73  0.040 / 0.040
G28     108.9          28.5                9.3 +/-    1.15      16.9 +/-    1.15  0.070 / 0.160