PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-22:43:00
G02     233.5          73.3               13.3 +/-    0.59      13.8 +/-    0.59  0.040 / 0.060
G05     172.2          14.0               18.4 +/-    2.37      47.0 +/-    2.37  0.040 / 0.060
G06     41.9           60.9               12.1 +/-    0.59      13.6 +/-    0.59  0.060 / 0.130
G12     321.6          49.4               11.9 +/-    1.00      15.1 +/-    1.00  0.070 / 0.120
G17     66.8           26.6                9.7 +/-    1.32      18.3 +/-    1.32  0.060 / 0.230
G19     52.3           42.1               11.0 +/-    1.10      15.4 +/-    1.10  0.110 / 0.270
G24     248.5          36.6               16.1 +/-    1.03      24.8 +/-    1.03  0.030 / 0.040