PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-18:57:50
G02     203.2          32.6               12.2 +/-    1.90      20.3 +/-    1.90  0.080 / 0.100
G06     157.5          68.9               10.3 +/-    1.15      10.9 +/-    1.15  0.070 / 0.100
G12     307.6          16.5                8.3 +/-    2.52      19.9 +/-    2.52  0.100 / 0.300
G17     33.8           51.0                8.6 +/-    0.37      10.7 +/-    0.37  0.150 / 0.220
G19     352.1          66.8                8.6 +/-    0.63       9.3 +/-    0.63  0.060 / 0.110
G24     298.4          38.1               10.0 +/-    1.08      15.0 +/-    1.08  0.060 / 0.130
G28     101.3          32.0               10.2 +/-    0.69      17.1 +/-    0.69  0.040 / 0.060