PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-20:43:00
G02     200.7          23.7               19.1 +/-    3.33      38.5 +/-    3.33  0.080 / 0.130
G06     168.0          57.9               16.0 +/-    0.47      18.5 +/-    0.47  0.080 / 0.200
G13     225.3          11.2               17.1 +/-    2.34      46.4 +/-    2.34  0.160 / 0.280
G17     21.4           59.6               12.6 +/-    0.70      14.4 +/-    0.70  0.320 / 0.370
G19     326.2          70.3               12.7 +/-    0.31      13.4 +/-    0.31  0.030 / 0.040
G24     307.8          31.9               11.1 +/-    1.39      18.6 +/-    1.39  0.040 / 0.030
G28     91.3           37.9               13.3 +/-    1.23      20.0 +/-    1.23  0.030 / 0.030
G30     157.3          11.6               18.9 +/-    3.68      51.0 +/-    3.68  0.040 / 0.030