PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-17:57:40
G02     219.4          62.2               12.7 +/-    1.18      14.2 +/-    1.18  0.100 / 0.300
G06     51.2           71.5               11.4 +/-    0.57      11.9 +/-    0.57  0.150 / 0.370
G12     318.6          37.4               11.2 +/-    1.37      17.0 +/-    1.37  0.050 / 0.060
G17     58.0           32.5                8.7 +/-    1.97      14.6 +/-    1.97  0.040 / 0.050
G19     43.9           45.9               12.1 +/-    0.97      16.1 +/-    0.97  0.070 / 0.090
G24     261.5          40.4               12.7 +/-    4.04      18.3 +/-    4.04  0.070 / 0.110
G28     123.1          16.5               10.0 +/-    1.75      24.0 +/-    1.75  0.050 / 0.080