PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-15:57:30
G02     203.6          32.4               10.3 +/-    1.36      17.2 +/-    1.36  0.060 / 0.110
G06     158.4          68.7               10.1 +/-    0.55      10.8 +/-    0.55  0.060 / 0.120
G12     306.4          14.0                8.7 +/-    1.59      22.2 +/-    1.59  0.060 / 0.130
G17     31.9           52.3                8.1 +/-    1.51       9.9 +/-    1.51  0.070 / 0.100
G19     3.4            64.9                8.3 +/-    0.66       9.1 +/-    0.66  0.050 / 0.040
G24     298.7          37.3                8.6 +/-    3.60      13.0 +/-    3.60  0.030 / 0.040
G28     98.6           36.8                9.8 +/-    1.35      15.0 +/-    1.35  0.040 / 0.030