PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/13-01:57:30
G02     279.5          81.7               10.4 +/-    0.60      10.5 +/-    0.60  0.040 / 0.030
G05     167.9          23.4               12.6 +/-    4.16      25.5 +/-    4.16  0.040 / 0.040
G06     39.9           51.6               10.3 +/-    0.78      12.7 +/-    0.78  0.070 / 0.110
G12     320.6          58.7               10.9 +/-    0.52      12.5 +/-    0.52  0.070 / 0.120
G19     63.7           34.9               11.2 +/-    1.29      17.8 +/-    1.29  0.160 / 0.130
G24     238.4          30.6               14.2 +/-    2.88      24.5 +/-    2.88  0.110 / 0.100
G25     317.6          17.6                7.9 +/-    2.01      18.4 +/-    2.01  0.050 / 0.050