PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/13-00:12:20
G02     202.9          36.7               14.0 +/-    1.02      21.5 +/-    1.02  0.080 / 0.300
G06     159.0          69.8               13.2 +/-    0.41      14.0 +/-    0.41  0.160 / 0.280
G12     307.9          15.4                8.3 +/-    2.22      20.3 +/-    2.22  0.130 / 0.110
G19     1.0            65.2               11.6 +/-    0.49      12.6 +/-    0.49  0.090 / 0.090
G24     297.5          38.2               12.8 +/-    1.32      19.2 +/-    1.32  0.040 / 0.030
G28     103.4          30.4               12.6 +/-    0.91      21.9 +/-    0.91  0.040 / 0.030