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               10.9 +/-    0.49      21.1 +/-    0.49  0.080 / 0.160
G07     105.9          59.0               12.2 +/-    0.63      14.0 +/-    0.63  0.070 / 0.160
G08     42.2           22.2                9.7 +/-    1.91      20.2 +/-    1.91  0.030 / 0.040
G09     174.8          13.8               14.1 +/-    2.33      36.2 +/-    2.33  0.030 / 0.070
G11     90.4           42.9               10.7 +/-    0.37      14.9 +/-    0.37  0.030 / 0.040
G13     310.0          28.3               11.0 +/-    1.21      20.0 +/-    1.21  0.030 / 0.030
G17     206.4          35.1               14.7 +/-    2.15      23.3 +/-    2.15  0.050 / 0.060
G18     81.1           24.3               10.9 +/-    1.63      21.7 +/-    1.63  0.050 / 0.050
G28     317.3          60.9               10.8 +/-    0.79      12.1 +/-    0.79  0.060 / 0.110
G30     23.7           77.9               12.9 +/-    0.62      13.2 +/-    0.62  0.060 / 0.090