PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-19:28:10
G02     244.0          75.5               11.8 +/-    0.33      12.2 +/-    0.33  0.160 / 0.300
G05     171.1          17.4               13.2 +/-    1.21      31.0 +/-    1.21  0.140 / 0.280
G06     40.6           55.2               11.4 +/-    0.60      13.5 +/-    0.60  0.140 / 0.140
G12     322.4          56.6               10.7 +/-    0.74      12.5 +/-    0.74  0.130 / 0.120
G17     72.0           21.7               10.1 +/-    1.02      21.4 +/-    1.02  0.140 / 0.310
G19     56.3           40.1               10.5 +/-    1.29      15.3 +/-    1.29  0.090 / 0.210
G24     242.4          33.9               14.4 +/-    2.03      23.4 +/-    2.03  0.040 / 0.040
G25     316.9          13.7                9.3 +/-    2.20      23.9 +/-    2.20  0.040 / 0.040