PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-23:12:40
G02     34.4           53.9                8.8 +/-    0.34      10.7 +/-    0.34  0.040 / 0.060
G05     134.1          63.6               11.0 +/-    0.67      12.2 +/-    0.67  0.040 / 0.060
G06     53.8           15.7                7.6 +/-    1.00      18.6 +/-    1.00  0.020 / 0.050
G12     202.0          68.3                8.1 +/-    1.14       8.7 +/-    1.14  0.030 / 0.040
G25     295.0          54.2                9.0 +/-    0.96      10.8 +/-    0.96  0.050 / 0.060
G29     309.4          31.1                8.1 +/-    1.23      13.9 +/-    1.23  0.050 / 0.070