PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-22:58:00
G01     66.8           32.4                9.4 +/-    0.75      15.7 +/-    0.75  0.040 / 0.080
G07     139.4          28.3               12.2 +/-    1.87      22.1 +/-    1.87  0.050 / 0.090
G11     52.7           30.1                9.1 +/-    1.12      15.8 +/-    1.12  0.050 / 0.060
G13     270.6          36.8               12.1 +/-    1.28      18.5 +/-    1.28  0.050 / 0.060
G15     299.1          16.1                9.1 +/-    2.66      21.9 +/-    2.66  0.030 / 0.050
G17     238.1          68.1               10.6 +/-    0.75      11.4 +/-    0.75  0.030 / 0.060
G18     46.8           16.8                8.2 +/-    1.20      19.6 +/-    1.20  0.030 / 0.040
G19     227.1          44.8               11.8 +/-    1.68      16.0 +/-    1.68  0.030 / 0.040
G28     26.6           58.2                9.0 +/-    0.70      10.4 +/-    0.70  0.050 / 0.140
G30     138.6          55.7               12.2 +/-    1.29      14.4 +/-    1.29  0.050 / 0.160