PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-17:27:50
G01     107.6          25.4               12.7 +/-    1.48      24.6 +/-    1.48  0.250 / 0.190
G07     105.9          59.0               12.9 +/-    1.25      14.8 +/-    1.25  0.090 / 0.220
G08     42.2           22.2                9.2 +/-    2.81      19.2 +/-    2.81  0.030 / 0.030
G09     174.8          13.8               10.8 +/-    2.23      27.7 +/-    2.23  0.030 / 0.040
G11     90.4           42.9               13.9 +/-    0.92      19.4 +/-    0.92  0.030 / 0.020
G13     310.0          28.3               11.8 +/-    1.13      21.4 +/-    1.13  0.030 / 0.020
G17     206.4          35.1               14.2 +/-    0.92      22.5 +/-    0.92  0.090 / 0.170
G18     81.1           24.3               12.7 +/-    1.75      25.2 +/-    1.75  0.110 / 0.160
G28     317.3          60.9                9.9 +/-    0.73      11.2 +/-    0.73  0.090 / 0.120
G30     23.7           77.9               12.4 +/-    0.52      12.6 +/-    0.52  0.080 / 0.150