PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-15:13:10
G02     202.6          25.6                8.5 +/-    1.80      16.5 +/-    1.80  0.080 / 0.080
G06     162.0          64.0                8.3 +/-    0.58       9.1 +/-    0.58  0.070 / 0.100
G12     305.4          14.7                4.8 +/-    1.97      12.0 +/-    1.97  0.070 / 0.250
G17     31.6           52.7                8.1 +/-    0.63       9.8 +/-    0.63  0.070 / 0.250
G19     334.8          69.1                7.1 +/-    0.38       7.5 +/-    0.38  0.040 / 0.030
G24     302.9          36.0                7.1 +/-    2.42      11.0 +/-    2.42  0.030 / 0.030
G28     95.9           35.4                8.3 +/-    1.61      13.1 +/-    1.61  0.030 / 0.030