PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-20:12:40
G02     26.4           60.6                7.1 +/-    0.57       8.0 +/-    0.57  0.030 / 0.050
G05     146.3          58.0                9.9 +/-    1.08      11.5 +/-    1.08  0.030 / 0.050
G06     51.9           17.7                6.5 +/-    1.10      15.0 +/-    1.10  0.030 / 0.050
G12     196.4          70.6                7.4 +/-    0.69       7.8 +/-    0.69  0.030 / 0.040
G19     95.2           15.1                8.5 +/-    1.15      21.1 +/-    1.15  0.040 / 0.060
G25     302.7          50.7                6.5 +/-    1.18       8.2 +/-    1.18  0.040 / 0.050
G29     303.4          23.4                6.9 +/-    1.98      14.0 +/-    1.98  0.050 / 0.070