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                9.9 +/-    1.33      16.5 +/-    1.33  0.150 / 0.230
G07     139.4          28.3               11.9 +/-    1.62      21.7 +/-    1.62  0.120 / 0.220
G11     52.7           30.1                8.6 +/-    1.23      15.0 +/-    1.23  0.050 / 0.060
G13     270.6          36.8               10.9 +/-    2.73      16.8 +/-    2.73  0.040 / 0.060
G15     299.1          16.1                8.6 +/-    2.81      20.8 +/-    2.81  0.050 / 0.100
G17     238.1          68.1               10.6 +/-    0.65      11.3 +/-    0.65  0.060 / 0.090
G18     46.8           16.8                7.7 +/-    1.83      18.3 +/-    1.83  0.040 / 0.040
G19     227.1          44.8               12.3 +/-    2.25      16.7 +/-    2.25  0.040 / 0.040
G28     26.6           58.2               12.4 +/-    1.13      14.3 +/-    1.13  0.040 / 0.050
G30     138.6          55.7               12.9 +/-    0.95      15.3 +/-    0.95  0.030 / 0.050