PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-18:57:40
G02     206.4          41.9               14.2 +/-    0.84      20.0 +/-    0.84  0.100 / 0.130
G06     132.3          77.0               11.8 +/-    0.58      12.1 +/-    0.58  0.150 / 0.110
G12     312.5          24.0                9.3 +/-    1.33      18.5 +/-    1.33  0.040 / 0.060
G17     42.6           44.1               10.8 +/-    1.71      14.8 +/-    1.71  0.070 / 0.060
G19     11.4           61.7               10.9 +/-    0.81      12.2 +/-    0.81  0.030 / 0.050
G24     287.2          41.7               16.7 +/-    1.78      23.6 +/-    1.78  0.030 / 0.060
G28     109.8          25.8               10.7 +/-    0.98      20.5 +/-    0.98  0.050 / 0.030