PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-17:27:50
G02     202.1          26.3               15.1 +/-    0.80      28.7 +/-    0.80  0.040 / 0.110
G06     163.5          63.2               16.6 +/-    1.24      18.4 +/-    1.24  0.040 / 0.150
G12     304.7          13.1               11.2 +/-    2.81      29.1 +/-    2.81  0.050 / 0.040
G17     29.3           54.4               11.4 +/-    0.36      13.7 +/-    0.36  0.050 / 0.030
G19     335.8          69.1               13.3 +/-    0.66      14.2 +/-    0.66  0.070 / 0.110
G24     303.7          35.3               13.2 +/-    1.37      20.9 +/-    1.37  0.060 / 0.100
G28     95.6           35.6               13.3 +/-    0.67      20.9 +/-    0.67  0.070 / 0.140