PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-16:28:00
G01     74.2           33.2                9.9 +/-    0.63      16.2 +/-    0.63  0.060 / 0.070
G07     135.7          33.8               11.8 +/-    1.35      19.2 +/-    1.35  0.060 / 0.080
G11     55.7           32.6                8.2 +/-    0.82      13.7 +/-    0.82  0.040 / 0.040
G13     278.0          37.8                9.9 +/-    1.15      15.0 +/-    1.15  0.030 / 0.040
G15     306.7          13.6                7.2 +/-    2.42      18.6 +/-    2.42  0.060 / 0.110
G17     228.5          65.5               10.2 +/-    0.64      11.0 +/-    0.64  0.240 / 0.260
G18     51.3           19.5                7.8 +/-    0.74      17.4 +/-    0.74  0.060 / 0.130
G19     222.1          36.9               11.2 +/-    1.78      17.2 +/-    1.78  0.060 / 0.120
G28     14.4           59.9                7.8 +/-    0.58       8.9 +/-    0.58  0.060 / 0.120
G30     132.2          65.0               10.1 +/-    0.66      11.0 +/-    0.66  0.060 / 0.110