PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-23:28:10
G02     230.7          72.4               12.0 +/-    0.50      12.5 +/-    0.50  0.030 / 0.060
G05     172.7          12.9               16.4 +/-    1.95      42.9 +/-    1.95  0.030 / 0.040
G06     42.5           62.6               11.2 +/-    0.34      12.5 +/-    0.34  0.240 / 0.370
G12     321.4          47.6               11.3 +/-    0.65      14.7 +/-    0.65  0.150 / 0.270
G17     65.3           28.0               11.0 +/-    0.88      20.2 +/-    0.88  0.120 / 0.080
G19     51.0           42.8               11.6 +/-    1.19      16.1 +/-    1.19  0.080 / 0.090
G24     250.4          37.3               14.5 +/-    0.82      22.1 +/-    0.82  0.040 / 0.040