PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-19:12:30
G02     217.4          60.1               10.0 +/-    0.78      11.3 +/-    0.78  0.070 / 0.080
G06     53.5           71.7                9.9 +/-    0.28      10.4 +/-    0.28  0.040 / 0.070
G12     319.8          40.0                8.1 +/-    1.40      11.8 +/-    1.40  0.070 / 0.070
G17     58.1           32.0                7.9 +/-    1.56      13.3 +/-    1.56  0.060 / 0.070
G19     37.7           50.4                8.4 +/-    1.73      10.5 +/-    1.73  0.030 / 0.040
G24     262.3          41.5               10.8 +/-    3.02      15.3 +/-    3.02  0.030 / 0.030
G28     123.4          12.8               10.6 +/-    3.37      27.7 +/-    3.37  0.040 / 0.050