PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/04-18:42:30
G02     56.3           36.5                9.1 +/-    1.70      14.0 +/-    1.70  0.040 / 0.020
G05     61.8           63.5                9.2 +/-    0.32      10.2 +/-    0.32  0.030 / 0.030
G12     181.1          30.4               10.6 +/-    1.90      18.4 +/-    1.90  0.050 / 0.090
G13     129.1          14.0               14.4 +/-    3.67      36.8 +/-    3.67  0.060 / 0.100
G21     269.4          15.1               12.5 +/-    1.78      31.0 +/-    1.78  0.060 / 0.080
G25     237.3          53.0                8.5 +/-    5.21      10.3 +/-    5.21  0.070 / 0.070
G29     326.1          51.4                9.1 +/-    1.36      11.2 +/-    1.36  0.180 / 0.400