PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-12:43:00
G02     203.4          26.9                5.0 +/-    0.91       9.3 +/-    0.91  0.090 / 0.300
G06     162.4          65.4                6.9 +/-    0.67       7.5 +/-    0.67  0.110 / 0.330
G12     306.0          14.7                0.9 +/-    2.10       2.2 +/-    2.10  0.040 / 0.030
G17     33.8           50.8                3.5 +/-    0.89       4.3 +/-    0.89  0.040 / 0.040
G19     338.5          68.4                4.6 +/-    0.85       4.9 +/-    0.85  0.050 / 0.080
G24     299.8          38.0                2.7 +/-    1.07       4.0 +/-    1.07  0.060 / 0.080
G28     97.8           34.7                4.4 +/-    0.81       7.0 +/-    0.81  0.050 / 0.120