PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-19:12:30
G02     209.6          48.9               13.1 +/-    2.06      16.7 +/-    2.06  0.090 / 0.250
G06     95.6           78.8               14.0 +/-    0.44      14.3 +/-    0.44  0.090 / 0.210
G12     315.6          29.7               11.5 +/-    1.36      20.2 +/-    1.36  0.060 / 0.130
G17     48.5           39.5               10.1 +/-    0.37      14.9 +/-    0.37  0.070 / 0.120
G19     22.7           57.5               11.9 +/-    0.80      13.8 +/-    0.80  0.050 / 0.100
G24     277.9          42.8               12.3 +/-    0.87      17.1 +/-    0.87  0.050 / 0.060
G28     115.4          21.0               12.7 +/-    0.85      27.2 +/-    0.85  0.040 / 0.090