PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-00:58:10
G02     272.7          81.2               10.7 +/-    0.97      10.8 +/-    0.97  0.060 / 0.050
G05     168.2          22.7               14.9 +/-    1.72      30.8 +/-    1.72  0.040 / 0.050
G06     40.0           51.9                9.6 +/-    0.41      11.9 +/-    0.41  0.060 / 0.130
G12     320.8          58.4               10.6 +/-    1.94      12.2 +/-    1.94  0.040 / 0.130
G17     74.3           22.1                9.5 +/-    0.87      19.8 +/-    0.87  0.100 / 0.120
G19     62.8           35.6               10.6 +/-    0.28      16.6 +/-    0.28  0.120 / 0.120
G24     238.9          31.0               14.6 +/-    1.87      25.1 +/-    1.87  0.040 / 0.030
G25     317.6          17.0                9.3 +/-    2.10      22.0 +/-    2.10  0.040 / 0.040