PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-23:13:10
G07     44.3           69.8               11.6 +/-    0.73      12.3 +/-    0.73  0.220 / 0.390
G08     53.9           43.7                8.5 +/-    0.89      11.7 +/-    0.89  0.330 / 0.410
G09     179.4          39.7               12.2 +/-    1.20      17.8 +/-    1.20  0.040 / 0.040
G11     124.2          33.1               13.2 +/-    0.84      21.7 +/-    0.84  0.040 / 0.040
G17     200.4          11.1                2.3 +/-   33.95       6.3 +/-   33.95  0.040 / 0.090
G28     273.4          52.1               10.9 +/-    0.93      13.4 +/-    0.93  0.050 / 0.080
G30     336.2          61.8                9.6 +/-    0.68      10.7 +/-    0.68  0.040 / 0.030