PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-16:27:20
G02     42.3           47.9                6.1 +/-    0.30       7.9 +/-    0.30  0.050 / 0.060
G05     114.3          70.4                8.0 +/-    0.36       8.4 +/-    0.36  0.040 / 0.050
G12     186.4          50.5               10.1 +/-    2.22      12.7 +/-    2.22  0.050 / 0.060
G25     266.2          59.6                8.1 +/-    0.70       9.2 +/-    0.70  0.070 / 0.050
G29     316.4          38.1                6.7 +/-    0.61      10.1 +/-    0.61  0.030 / 0.040