PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-23:12:30
G02     219.0          64.1               15.7 +/-    0.60      17.3 +/-    0.60  0.070 / 0.100
G06     53.7           74.6               12.5 +/-    0.86      12.9 +/-    0.86  0.070 / 0.100
G12     318.4          36.2               10.0 +/-    0.85      15.6 +/-    0.85  0.030 / 0.040
G17     59.9           29.8               10.9 +/-    0.67      19.2 +/-    0.67  0.030 / 0.030
G19     42.9           46.8               12.4 +/-    0.56      16.2 +/-    0.56  0.080 / 0.260
G24     259.8          40.8               14.5 +/-    1.64      20.9 +/-    1.64  0.100 / 0.250
G28     123.4          15.3               15.5 +/-    2.59      38.1 +/-    2.59  0.040 / 0.050