PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-22:43:00
G01     66.0           32.2               11.7 +/-    1.50      19.6 +/-    1.50  0.120 / 0.240
G07     139.7          27.7               13.8 +/-    1.50      25.4 +/-    1.50  0.110 / 0.190
G11     52.2           29.5               10.2 +/-    1.30      18.0 +/-    1.30  0.040 / 0.040
G13     269.8          36.7               14.1 +/-    2.41      21.7 +/-    2.41  0.050 / 0.050
G15     298.5          16.2               11.4 +/-    2.77      27.6 +/-    2.77  0.080 / 0.220
G17     239.2          68.4               14.3 +/-    0.55      15.2 +/-    0.55  0.240 / 0.350
G18     46.4           16.4                8.2 +/-    1.47      19.7 +/-    1.47  0.080 / 0.100
G19     227.6          45.3               15.9 +/-    2.18      21.3 +/-    2.18  0.070 / 0.110
G28     27.6           58.0               14.5 +/-    1.17      16.7 +/-    1.17  0.040 / 0.040
G30     139.1          55.2               14.5 +/-    0.74      17.2 +/-    0.74  0.040 / 0.040