PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-21:27:30
G01     44.8           21.0               10.7 +/-    0.55      23.0 +/-    0.55  0.080 / 0.220
G06     178.1          29.1               20.6 +/-    0.81      36.8 +/-    0.81  0.090 / 0.260
G13     243.1          27.1               18.3 +/-    1.27      34.1 +/-    1.27  0.150 / 0.350
G15     276.6          14.4               13.3 +/-    2.01      33.5 +/-    2.01  0.120 / 0.420
G17     346.0          75.5               13.9 +/-    0.66      14.3 +/-    0.66  0.070 / 0.100
G19     258.4          65.2               14.3 +/-    0.97      15.6 +/-    0.97  0.050 / 0.100
G24     317.9          14.3               10.9 +/-    1.93      27.5 +/-    1.93  0.040 / 0.050
G28     56.5           53.1               12.8 +/-    0.61      15.6 +/-    0.61  0.040 / 0.040
G30     152.0          33.3               17.1 +/-    2.41      28.0 +/-    2.41  0.070 / 0.150