PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-04:27:30
G02     201.3          32.2                5.7 +/-    1.59       9.5 +/-    1.59  0.070 / 0.120
G06     169.8          62.4                4.4 +/-    0.46       4.9 +/-    0.46  0.080 / 0.110
G12     304.9          10.8               -7.0 +/-    6.78     -19.1 +/-    6.78  0.020 / 0.040
G17     30.8           53.3                2.5 +/-    0.65       3.0 +/-    0.65  0.030 / 0.040
G19     352.9          67.4                1.2 +/-    0.40       1.3 +/-    0.40  0.040 / 0.070
G24     303.2          35.1                2.7 +/-    1.85       4.2 +/-    1.85  0.030 / 0.040
G28     98.7           33.4                4.2 +/-    1.34       6.9 +/-    1.34  0.150 / 0.200