PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-14:42:50
G02     247.5          74.7                5.1 +/-    0.40       5.3 +/-    0.40  0.090 / 0.100
G05     172.8          17.3                6.3 +/-    1.68      14.8 +/-    1.68  0.080 / 0.080
G06     40.1           53.8                5.9 +/-    0.59       7.1 +/-    0.59  0.030 / 0.030
G12     322.0          58.7                5.6 +/-    0.85       6.5 +/-    0.85  0.040 / 0.060
G17     74.6           18.8                4.8 +/-    1.04      11.0 +/-    1.04  0.140 / 0.260
G19     57.1           40.1                5.1 +/-    1.14       7.4 +/-    1.14  0.150 / 0.210
G24     238.5          32.3                5.5 +/-    1.89       9.2 +/-    1.89  0.460 / 0.230
G25     317.1          17.5                3.9 +/-    2.97       9.2 +/-    2.97  0.110 / 0.200