PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-17:58:00
G02     203.1          30.8               14.3 +/-    1.91      24.6 +/-    1.91  0.080 / 0.080
G06     158.8          67.7               13.7 +/-    0.46      14.7 +/-    0.46  0.090 / 0.090
G12     307.1          16.1               11.4 +/-    0.85      27.6 +/-    0.85  0.030 / 0.030
G17     33.3           51.3               12.2 +/-    1.06      15.2 +/-    1.06  0.030 / 0.030
G19     348.1          67.5               12.5 +/-    0.38      13.4 +/-    0.38  0.110 / 0.250
G24     299.5          37.7               12.7 +/-    1.43      19.2 +/-    1.43  0.190 / 0.260
G28     100.1          32.8               12.6 +/-    1.31      20.9 +/-    1.31  0.030 / 0.030