PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-01:57:50
G02     220.5          66.9               10.2 +/-    1.06      10.9 +/-    1.06  0.040 / 0.080
G06     48.8           70.5                8.4 +/-    0.31       8.9 +/-    0.31  0.040 / 0.060
G12     319.8          39.9                7.8 +/-    0.89      11.4 +/-    0.89  0.030 / 0.050
G17     59.4           32.5                5.8 +/-    0.90       9.6 +/-    0.90  0.040 / 0.050
G19     44.6           46.3                6.1 +/-    0.64       8.1 +/-    0.64  0.070 / 0.090
G24     259.3          40.1               10.7 +/-    0.94      15.5 +/-    0.94  0.040 / 0.090