PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-01:43:00
G02     43.7           45.7                9.2 +/-    1.11      12.3 +/-    1.11  0.040 / 0.050
G05     106.5          68.7               11.1 +/-    0.64      11.8 +/-    0.64  0.040 / 0.040
G12     193.1          57.2               11.6 +/-    0.30      13.6 +/-    0.30  0.030 / 0.040
G25     274.6          58.6               12.4 +/-    1.06      14.3 +/-    1.06  0.030 / 0.040
G29     317.5          40.4               10.3 +/-    1.42      14.9 +/-    1.42  0.040 / 0.030