PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/14-00:42:50
G02     209.4          52.7               13.1 +/-    0.63      16.0 +/-    0.63  0.140 / 0.090
G06     96.9           79.6                9.3 +/-    0.53       9.5 +/-    0.53  0.100 / 0.070
G12     315.3          27.9                7.7 +/-    0.87      14.2 +/-    0.87  0.040 / 0.010
G17     46.9           41.8                6.9 +/-    1.07       9.8 +/-    1.07  0.030 / 0.010
G19     27.5           55.4                9.2 +/-    1.50      10.9 +/-    1.50  0.080 / 0.030
G24     277.8          42.3               11.1 +/-    1.38      15.6 +/-    1.38  0.090 / 0.030
G28     116.6          19.7               10.8 +/-    1.45      23.9 +/-    1.45  0.110 / 0.230