PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-16:58:00
G02     25.7           60.5                8.4 +/-    0.84       9.5 +/-    0.84  0.040 / 0.050
G05     147.7          59.3               11.2 +/-    0.74      12.8 +/-    0.74  0.030 / 0.050
G06     52.9           16.3                6.8 +/-    2.25      16.3 +/-    2.25  0.040 / 0.060
G12     193.7          67.8                8.2 +/-    0.95       8.8 +/-    0.95  0.040 / 0.060
G19     96.7           14.8                8.9 +/-    1.45      22.3 +/-    1.45  0.050 / 0.060
G25     297.9          53.9                9.0 +/-    1.52      10.9 +/-    1.52  0.040 / 0.070
G29     305.5          25.7                8.1 +/-    2.16      15.6 +/-    2.16  0.120 / 0.190