PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-21:43:00
G02     45.5           45.0               10.3 +/-    0.43      13.9 +/-    0.43  0.030 / 0.040
G05     97.4           69.4               12.7 +/-    0.36      13.5 +/-    0.36  0.030 / 0.040
G12     185.6          48.1               14.7 +/-    2.67      19.0 +/-    2.67  0.040 / 0.070
G25     267.2          58.6               12.6 +/-    1.20      14.5 +/-    1.20  0.050 / 0.070
G29     317.1          38.8               11.0 +/-    0.78      16.3 +/-    0.78  0.040 / 0.050