PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-16:43:10
G02     245.6          74.9                9.2 +/-    0.79       9.5 +/-    0.79  0.040 / 0.040
G05     171.3          17.9               13.3 +/-    1.74      30.9 +/-    1.74  0.040 / 0.040
G06     40.6           53.4                7.8 +/-    0.55       9.4 +/-    0.55  0.160 / 0.120
G12     322.9          59.9                7.7 +/-    1.26       8.8 +/-    1.26  0.110 / 0.140
G17     73.9           19.3                8.1 +/-    1.64      18.1 +/-    1.64  0.060 / 0.150
G19     56.8           40.1                8.8 +/-    0.92      12.8 +/-    0.92  0.100 / 0.190
G24     240.4          33.1               12.9 +/-    1.08      21.2 +/-    1.08  0.050 / 0.070
G25     317.1          15.4                6.1 +/-    3.20      15.0 +/-    3.20  0.050 / 0.070