PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-00:28:10
G02     226.4          70.5               11.1 +/-    0.48      11.7 +/-    0.48  0.020 / 0.030
G05     173.6          10.9               -1.6 +/-   30.01      -4.4 +/-   30.01  0.030 / 0.030
G06     44.2           65.6                9.5 +/-    0.43      10.4 +/-    0.43  0.050 / 0.050
G12     320.9          44.6               10.5 +/-    0.72      14.3 +/-    0.72  0.030 / 0.050
G17     62.7           30.3                9.8 +/-    0.65      17.0 +/-    0.65  0.130 / 0.210
G19     48.7           44.1               11.1 +/-    1.10      15.1 +/-    1.10  0.170 / 0.220
G24     253.6          38.5               13.3 +/-    1.21      19.8 +/-    1.21  0.070 / 0.090