PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-00:12:40
G02     200.3          25.5               13.8 +/-    2.76      26.7 +/-    2.76  0.050 / 0.030
G06     169.6          57.6               13.6 +/-    0.63      15.8 +/-    0.63  0.040 / 0.020
G13     225.2          10.9               15.9 +/-    2.27      43.5 +/-    2.27  0.030 / 0.030
G17     19.9           60.3               11.3 +/-    0.91      12.8 +/-    0.91  0.030 / 0.030
G19     332.2          70.2               11.1 +/-    0.44      11.7 +/-    0.44  0.040 / 0.080
G24     307.8          31.7               11.9 +/-    1.01      20.0 +/-    1.01  0.090 / 0.100
G28     92.2           37.3               12.7 +/-    1.18      19.3 +/-    1.18  0.090 / 0.100