PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-20:57:50
G06     178.3          26.8               15.0 +/-    1.91      28.1 +/-    1.91  0.170 / 0.350
G11     43.5           10.9               10.2 +/-    1.94      27.8 +/-    1.94  0.190 / 0.330
G13     245.4          28.6               14.9 +/-    1.63      27.0 +/-    1.63  0.070 / 0.100
G15     278.9          15.0               14.2 +/-    1.85      35.2 +/-    1.85  0.070 / 0.100
G17     336.2          77.1               15.0 +/-    0.36      15.4 +/-    0.36  0.080 / 0.190
G19     253.3          63.5               15.0 +/-    0.60      16.6 +/-    0.60  0.090 / 0.180
G24     318.3          12.2                9.6 +/-    3.93      25.6 +/-    3.93  0.040 / 0.040
G28     52.6           54.2               12.6 +/-    0.56      15.2 +/-    0.56  0.050 / 0.040
G30     151.0          35.5               14.8 +/-    0.73      23.3 +/-    0.73  0.100 / 0.260