PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-18:43:00
G02     29.2           58.4               10.9 +/-    0.55      12.5 +/-    0.55  0.030 / 0.040
G05     142.1          61.1               12.7 +/-    1.11      14.3 +/-    1.11  0.040 / 0.040
G06     53.9           14.6                9.7 +/-    2.59      24.3 +/-    2.59  0.030 / 0.040
G12     190.2          65.7               10.0 +/-    2.03      10.9 +/-    2.03  0.030 / 0.040
G19     98.0           13.3               11.8 +/-    0.75      30.6 +/-    0.75  0.140 / 0.380
G25     297.6          53.6               10.5 +/-    0.94      12.7 +/-    0.94  0.120 / 0.320
G29     305.9          25.9                9.1 +/-    2.21      17.4 +/-    2.21  0.040 / 0.060