PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-22:43:00
G02     226.7          69.9               11.0 +/-    0.38      11.7 +/-    0.38  0.030 / 0.050
G05     173.7          10.9                5.0 +/-   37.55      13.7 +/-   37.55  0.040 / 0.050
G06     44.0           64.7                9.9 +/-    0.39      10.9 +/-    0.39  0.080 / 0.110
G12     321.1          45.7               10.2 +/-    0.90      13.6 +/-    0.90  0.070 / 0.090
G17     63.7           29.0                9.7 +/-    1.41      17.4 +/-    1.41  0.160 / 0.300
G19     48.3           44.4               10.9 +/-    1.09      14.7 +/-    1.09  0.170 / 0.360
G24     252.9          38.4               13.0 +/-    1.94      19.5 +/-    1.94  0.030 / 0.030