PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-22:12:30
G02     203.0          35.4               21.5 +/-    1.76      33.8 +/-    1.76  0.120 / 0.380
G06     157.8          69.7               15.0 +/-    0.80      15.9 +/-    0.80  0.130 / 0.360
G12     307.8          15.7                9.8 +/-    2.52      24.0 +/-    2.52  0.090 / 0.130
G17     32.6           52.0               11.7 +/-    0.69      14.4 +/-    0.69  0.080 / 0.120
G19     358.0          65.8               11.8 +/-    0.75      12.9 +/-    0.75  0.050 / 0.110
G24     297.8          38.2               13.3 +/-    1.27      19.9 +/-    1.27  0.050 / 0.090
G28     102.7          30.9               15.3 +/-    0.56      26.2 +/-    0.56  0.070 / 0.110