PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-23:28:10
G02     202.6          35.0               16.8 +/-    1.15      26.7 +/-    1.15  0.030 / 0.040
G06     160.2          68.5               14.2 +/-    0.52      15.1 +/-    0.52  0.030 / 0.030
G12     307.2          14.6                9.4 +/-    2.38      23.5 +/-    2.38  0.070 / 0.320
G17     30.6           53.4               11.9 +/-    0.72      14.5 +/-    0.72  0.120 / 0.250
G19     357.4          66.0               11.8 +/-    0.62      12.8 +/-    0.62  0.130 / 0.090
G24     298.9          37.6               11.5 +/-    2.64      17.3 +/-    2.64  0.050 / 0.080
G28     102.0          31.3               13.2 +/-    1.83      22.4 +/-    1.83  0.060 / 0.100