PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-01:27:30
G02     12.7           70.3                8.7 +/-    0.94       9.2 +/-    0.94  0.030 / 0.040
G05     157.5          44.4               14.4 +/-    0.71      19.5 +/-    0.71  0.030 / 0.030
G06     44.9           31.0                7.0 +/-    0.74      12.1 +/-    0.74  0.030 / 0.070
G12     278.2          79.1                8.6 +/-    0.82       8.8 +/-    0.82  0.030 / 0.060
G19     83.5           22.3                9.9 +/-    0.75      20.6 +/-    0.75  0.130 / 0.210
G24     221.1          15.8               13.0 +/-    1.85      31.7 +/-    1.85  0.170 / 0.210
G25     314.6          37.1                8.9 +/-    1.27      13.6 +/-    1.27  0.040 / 0.050
G29     293.3          14.3               10.0 +/-    2.06      25.2 +/-    2.06  0.050 / 0.050