PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-20:57:20
G02     203.0          34.2               15.4 +/-    0.98      24.8 +/-    0.98  0.120 / 0.250
G06     157.8          69.3               13.3 +/-    0.44      14.1 +/-    0.44  0.170 / 0.220
G12     307.6          15.8               10.8 +/-    2.63      26.4 +/-    2.63  0.100 / 0.090
G17     33.0           51.7               12.0 +/-    1.17      14.8 +/-    1.17  0.070 / 0.090
G19     355.5          66.3               11.5 +/-    0.47      12.4 +/-    0.47  0.030 / 0.020
G24     298.2          38.1               13.2 +/-    1.74      19.8 +/-    1.74  0.030 / 0.030
G28     102.1          31.4               11.1 +/-    0.75      18.8 +/-    0.75  0.040 / 0.040