PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/30-20:57:40
G02     219.1          63.6               10.4 +/-    0.86      11.4 +/-    0.86  0.080 / 0.290
G06     52.3           73.0               10.1 +/-    0.64      10.5 +/-    0.64  0.080 / 0.290
G12     318.4          36.5                8.9 +/-    0.78      13.8 +/-    0.78  0.070 / 0.090
G17     59.2           30.8                9.5 +/-    0.66      16.3 +/-    0.66  0.080 / 0.090
G19     43.3           46.4                9.8 +/-    0.91      13.0 +/-    0.91  0.050 / 0.060
G24     260.6          40.6               12.2 +/-    1.15      17.6 +/-    1.15  0.040 / 0.060
G28     123.2          15.8               10.8 +/-    2.11      26.3 +/-    2.11  0.040 / 0.100