PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-22:27:50
G02     41.2           48.5                8.2 +/-    0.82      10.5 +/-    0.82  0.030 / 0.040
G05     113.9          68.4                9.1 +/-    0.73       9.8 +/-    0.73  0.040 / 0.040
G12     187.9          54.8                9.5 +/-    1.81      11.3 +/-    1.81  0.040 / 0.050
G25     279.2          57.9                9.3 +/-    0.82      10.8 +/-    0.82  0.040 / 0.080
G29     313.5          34.4                8.2 +/-    1.61      13.2 +/-    1.61  0.050 / 0.050